Mdthbs

How can I portray a character with no fear of death, without them sounding utterly bored?

Properly unlinking hard links

How do I get my neighbour to stop disturbing with loud music?

An idiom for “Until you punish the offender, they will not give up offenses”

I was given someone else's visa, stamped in my passport

Modeling an M1A2 Smoke Grenade Launcher

Do universities maintain secret textbooks?

How does the search space affect the speed of an ILP solver?

Cheap oscilloscope showing 16 MHz square wave

Moscow SVO airport, how to avoid scam taxis without pre-booking?

Could a complex system of reaction wheels be used to propel a spacecraft?

Ideas behind the 8.Bd3 line in the 4.Ng5 Two Knights Defense

What is the motivation behind designing a control stick that does not move?

What caused the end of cybernetic implants?

Using font to highlight a god's speech in dialogue

Heavy Box Stacking

How many possible file types in the output `ls -l` command?

How can I store milk for long periods of time?

In Toy Story, are toys the only inanimate objects that become alive? And if so, why?

Understanding data transmission rates over copper wire

How to get frequency counts using column breaks by row?

How would a disabled person earn their living in a medieval-type town?

Is there anything in the universe that cannot be compressed?

Necessity of tenure for lifetime academic research

Is the net torque changed when a partner on a seesaw stands or hangs from her end instead of sitting?

Conservation of angular momentum experimentWhy are non-horizontal levers not considered to be in equilibrium?Clearing up confusion about calculating torqueWhy is Torque Generated from Friction?Net torque on an object when when all the forces pass through a common point

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ margin-bottom:0;
}

3

$begingroup$

Is the net torque changed when a partner on a seesaw stands or hangs from her end instead of sitting? (Does the weight or the lever arm change?)

classical-mechanics torque

share|cite|improve this question

edited 8 hours ago

Emilio Pisanty

90.9k2323 gold badges228228 silver badges470470 bronze badges

asked 9 hours ago

Jacob AgamJacob Agam

1611 bronze badge

New contributor

Jacob Agam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

add a comment | 

3

$begingroup$

Is the net torque changed when a partner on a seesaw stands or hangs from her end instead of sitting? (Does the weight or the lever arm change?)

classical-mechanics torque

share|cite|improve this question

edited 8 hours ago

Emilio Pisanty

90.9k2323 gold badges228228 silver badges470470 bronze badges

asked 9 hours ago

Jacob AgamJacob Agam

1611 bronze badge

New contributor

Jacob Agam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

add a comment | 

$begingroup$

Is the net torque changed when a partner on a seesaw stands or hangs from her end instead of sitting? (Does the weight or the lever arm change?)

classical-mechanics torque

share|cite|improve this question

edited 8 hours ago

Emilio Pisanty

90.9k2323 gold badges228228 silver badges470470 bronze badges

asked 9 hours ago

Jacob AgamJacob Agam

1611 bronze badge

New contributor

Jacob Agam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

share|cite|improve this question

edited 8 hours ago

Emilio Pisanty

90.9k2323 gold badges228228 silver badges470470 bronze badges

asked 9 hours ago

Jacob AgamJacob Agam

1611 bronze badge

New contributor

Jacob Agam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|cite|improve this question

edited 8 hours ago

Emilio Pisanty

90.9k2323 gold badges228228 silver badges470470 bronze badges

asked 9 hours ago

Jacob AgamJacob Agam

1611 bronze badge

New contributor

Jacob Agam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 8 hours ago

Emilio Pisanty

90.9k2323 gold badges228228 silver badges470470 bronze badges

edited 8 hours ago

Emilio Pisanty

90.9k2323 gold badges228228 silver badges470470 bronze badges

asked 9 hours ago

Jacob AgamJacob Agam

1611 bronze badge

New contributor

Jacob Agam is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 9 hours ago

Jacob AgamJacob Agam

1611 bronze badge

3 Answers
3

active

oldest

votes

2

$begingroup$

No, if one simply hangs or stands, the force on the lever arm does not change. As, torque stands for $F times r$. Here, if the only affecting force is weight, then $F=mg$, (In case one tries to climb up the arm or jumps on it includes some extra forces.) and is directed straight down, as long as the lever arm is horizontal. If the person doesn't change his position, namely the $r$, the torque cannot change.

share|cite|improve this answer

edited 8 hours ago

Thomas Fritsch

4,44522 gold badges1717 silver badges2727 bronze badges

answered 8 hours ago

Golam IshtiakGolam Ishtiak

3333 bronze badges

New contributor

Golam Ishtiak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  The diagram does show a slight change in position, though -- the line of action of the girl's weight, through her COM, is slightly beyond the end of the see-saw plate, whereas the boy's weight acts slightly inwards from the end.
  $endgroup$
  – Emilio Pisanty
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @EmilioPisanty Good point ! Besides girl can start to swing back and forward, thus making torque force oscillating from minimum to maximum in such way boy will have more fun :-D
  $endgroup$
  – Agnius Vasiliauskas
  8 hours ago
  

  
  
  
  

add a comment | 

0

$begingroup$

It does not matter how the weight is arranged, as long as it's center of mass (the midpoint of weight) stays the same distance from the pivot point. Moving farther from the pivot point increases leverage, moving closer decreases leverage. Of coarse putting your feet on the ground will lessen the weight on the see saw.

share|cite|improve this answer

answered 7 hours ago

Adrian HowardAdrian Howard

82911 silver badge1010 bronze badges

$endgroup$

add a comment | 

0

$begingroup$

There is a slight difference due to the change in the lever arm between the hanging position indicated and a sitting position. the girl’s weight is applied to the very end of the see-saw plank; her center of mass will be directly below where she is holding the plank. When she’s sitting on the plank the effective lever arm will be shortened by something like 10cm. Your center of mass is, roughly, in the middle of your body behind your navel. If you consider where that point is for the boy in the figure you can see that it is a bit away from the very end of the plank.

share|cite|improve this answer

answered 6 hours ago

DaveDave

2,39433 gold badges1616 silver badges3131 bronze badges

$endgroup$

add a comment | 

Your Answer

StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "151"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});

Jacob Agam is a new contributor. Be nice, and check out our Code of Conduct.

draft saved

draft discarded

Sign up or log in

StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});

Sign up using Google

Sign up using Facebook

Sign up using Email and Password

Post as a guest

Name

Email

Required, but never shown

StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fphysics.stackexchange.com%2fquestions%2f499608%2fis-the-net-torque-changed-when-a-partner-on-a-seesaw-stands-or-hangs-from-her-en%23new-answer', 'question_page');
}
);

Post as a guest

Name

Email

Required, but never shown

2

$begingroup$

No, if one simply hangs or stands, the force on the lever arm does not change. As, torque stands for $F times r$. Here, if the only affecting force is weight, then $F=mg$, (In case one tries to climb up the arm or jumps on it includes some extra forces.) and is directed straight down, as long as the lever arm is horizontal. If the person doesn't change his position, namely the $r$, the torque cannot change.

share|cite|improve this answer

edited 8 hours ago

Thomas Fritsch

4,44522 gold badges1717 silver badges2727 bronze badges

answered 8 hours ago

Golam IshtiakGolam Ishtiak

3333 bronze badges

New contributor

Golam Ishtiak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  The diagram does show a slight change in position, though -- the line of action of the girl's weight, through her COM, is slightly beyond the end of the see-saw plate, whereas the boy's weight acts slightly inwards from the end.
  $endgroup$
  – Emilio Pisanty
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @EmilioPisanty Good point ! Besides girl can start to swing back and forward, thus making torque force oscillating from minimum to maximum in such way boy will have more fun :-D
  $endgroup$
  – Agnius Vasiliauskas
  8 hours ago
  

  
  
  
  

add a comment | 

2

$begingroup$

No, if one simply hangs or stands, the force on the lever arm does not change. As, torque stands for $F times r$. Here, if the only affecting force is weight, then $F=mg$, (In case one tries to climb up the arm or jumps on it includes some extra forces.) and is directed straight down, as long as the lever arm is horizontal. If the person doesn't change his position, namely the $r$, the torque cannot change.

share|cite|improve this answer

edited 8 hours ago

Thomas Fritsch

4,44522 gold badges1717 silver badges2727 bronze badges

answered 8 hours ago

Golam IshtiakGolam Ishtiak

3333 bronze badges

New contributor

Golam Ishtiak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  $begingroup$
  The diagram does show a slight change in position, though -- the line of action of the girl's weight, through her COM, is slightly beyond the end of the see-saw plate, whereas the boy's weight acts slightly inwards from the end.
  $endgroup$
  – Emilio Pisanty
  8 hours ago
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  $begingroup$
  @EmilioPisanty Good point ! Besides girl can start to swing back and forward, thus making torque force oscillating from minimum to maximum in such way boy will have more fun :-D
  $endgroup$
  – Agnius Vasiliauskas
  8 hours ago
  

  
  
  
  

add a comment | 

$begingroup$

No, if one simply hangs or stands, the force on the lever arm does not change. As, torque stands for $F times r$. Here, if the only affecting force is weight, then $F=mg$, (In case one tries to climb up the arm or jumps on it includes some extra forces.) and is directed straight down, as long as the lever arm is horizontal. If the person doesn't change his position, namely the $r$, the torque cannot change.

share|cite|improve this answer

edited 8 hours ago

Thomas Fritsch

4,44522 gold badges1717 silver badges2727 bronze badges

answered 8 hours ago

Golam IshtiakGolam Ishtiak

3333 bronze badges

New contributor

Golam Ishtiak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

$endgroup$

share|cite|improve this answer

edited 8 hours ago

Thomas Fritsch

4,44522 gold badges1717 silver badges2727 bronze badges

answered 8 hours ago

Golam IshtiakGolam Ishtiak

3333 bronze badges

New contributor

Golam Ishtiak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

edited 8 hours ago

Thomas Fritsch

4,44522 gold badges1717 silver badges2727 bronze badges

edited 8 hours ago

Thomas Fritsch

4,44522 gold badges1717 silver badges2727 bronze badges

answered 8 hours ago

Golam IshtiakGolam Ishtiak

3333 bronze badges

New contributor

Golam Ishtiak is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

answered 8 hours ago

Golam IshtiakGolam Ishtiak

3333 bronze badges

0

$begingroup$

It does not matter how the weight is arranged, as long as it's center of mass (the midpoint of weight) stays the same distance from the pivot point. Moving farther from the pivot point increases leverage, moving closer decreases leverage. Of coarse putting your feet on the ground will lessen the weight on the see saw.

share|cite|improve this answer

answered 7 hours ago

Adrian HowardAdrian Howard

82911 silver badge1010 bronze badges

$endgroup$

add a comment | 

0

$begingroup$

It does not matter how the weight is arranged, as long as it's center of mass (the midpoint of weight) stays the same distance from the pivot point. Moving farther from the pivot point increases leverage, moving closer decreases leverage. Of coarse putting your feet on the ground will lessen the weight on the see saw.

share|cite|improve this answer

answered 7 hours ago

Adrian HowardAdrian Howard

82911 silver badge1010 bronze badges

$endgroup$

add a comment | 

$begingroup$

It does not matter how the weight is arranged, as long as it's center of mass (the midpoint of weight) stays the same distance from the pivot point. Moving farther from the pivot point increases leverage, moving closer decreases leverage. Of coarse putting your feet on the ground will lessen the weight on the see saw.

share|cite|improve this answer

answered 7 hours ago

Adrian HowardAdrian Howard

82911 silver badge1010 bronze badges

$endgroup$

share|cite|improve this answer

answered 7 hours ago

Adrian HowardAdrian Howard

82911 silver badge1010 bronze badges

answered 7 hours ago

Adrian HowardAdrian Howard

82911 silver badge1010 bronze badges

answered 7 hours ago

Adrian HowardAdrian Howard

82911 silver badge1010 bronze badges

0

$begingroup$

There is a slight difference due to the change in the lever arm between the hanging position indicated and a sitting position. the girl’s weight is applied to the very end of the see-saw plank; her center of mass will be directly below where she is holding the plank. When she’s sitting on the plank the effective lever arm will be shortened by something like 10cm. Your center of mass is, roughly, in the middle of your body behind your navel. If you consider where that point is for the boy in the figure you can see that it is a bit away from the very end of the plank.

share|cite|improve this answer

answered 6 hours ago

DaveDave

2,39433 gold badges1616 silver badges3131 bronze badges

$endgroup$

add a comment | 

0

$begingroup$

There is a slight difference due to the change in the lever arm between the hanging position indicated and a sitting position. the girl’s weight is applied to the very end of the see-saw plank; her center of mass will be directly below where she is holding the plank. When she’s sitting on the plank the effective lever arm will be shortened by something like 10cm. Your center of mass is, roughly, in the middle of your body behind your navel. If you consider where that point is for the boy in the figure you can see that it is a bit away from the very end of the plank.

share|cite|improve this answer

answered 6 hours ago

DaveDave

2,39433 gold badges1616 silver badges3131 bronze badges

$endgroup$

add a comment | 

$begingroup$

There is a slight difference due to the change in the lever arm between the hanging position indicated and a sitting position. the girl’s weight is applied to the very end of the see-saw plank; her center of mass will be directly below where she is holding the plank. When she’s sitting on the plank the effective lever arm will be shortened by something like 10cm. Your center of mass is, roughly, in the middle of your body behind your navel. If you consider where that point is for the boy in the figure you can see that it is a bit away from the very end of the plank.

share|cite|improve this answer

answered 6 hours ago

DaveDave

2,39433 gold badges1616 silver badges3131 bronze badges

$endgroup$

share|cite|improve this answer

answered 6 hours ago

DaveDave

2,39433 gold badges1616 silver badges3131 bronze badges

answered 6 hours ago

DaveDave

2,39433 gold badges1616 silver badges3131 bronze badges

answered 6 hours ago

DaveDave

2,39433 gold badges1616 silver badges3131 bronze badges