Rigid body rotation -- A person walking around a merry-go-round

In summary, a person's walking on a merry-go-round causes a change in mass distribution that creates a torque, leading to the merry-go-round rotating in the opposite direction to conserve angular momentum. The sensation of being pushed outwards is due to the centrifugal force caused by the rotation. The speed of the person's walking does not affect the rotation, but walking in the opposite direction can increase the rotation speed. The radius of the merry-go-round does not directly affect walking, but can indirectly affect the rotation by changing the distribution of mass.
  • #1
Butterfly41398
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Poster has been reminded to show their work on schoolwork problems
Homework Statement
Find the net rotation in the merry go round
Relevant Equations
I=mr^2
This one is challenging for me. Can anyone give me a hint?
 

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  • #2
At Physics Forums no help or hints can be given until you've shown your own attempt at solution, or at least detail what approaches you've tried. Homework questions without an effort shown are often simply deleted.
 
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Likes Frigus
  • #3
Conserve ##\vec {L}##.
 
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Likes etotheipi and Delta2
  • #4
In case your textbook is using a different symbol than L above. Go back to your textbook, or some other, and examine "conservation of angular momentum"
 

1. What is rigid body rotation?

Rigid body rotation is a type of motion where an object rotates around a fixed axis without any deformation or change in shape.

2. How does a person walking around a merry-go-round demonstrate rigid body rotation?

When a person walks around a merry-go-round, they are rotating around a fixed axis (the center of the merry-go-round) without any deformation or change in shape. This is an example of rigid body rotation.

3. What factors affect the speed of rigid body rotation?

The speed of rigid body rotation is affected by the mass and distribution of mass of the object, as well as the distance from the axis of rotation and the force applied to the object.

4. Can rigid body rotation be affected by external forces?

Yes, rigid body rotation can be affected by external forces such as friction or air resistance. These forces can either speed up or slow down the rotation depending on their direction and magnitude.

5. How is rigid body rotation different from non-rigid body rotation?

Rigid body rotation involves an object rotating without any deformation or change in shape, while non-rigid body rotation involves an object changing shape as it rotates. An example of non-rigid body rotation is a spinning top, where the top flattens at the bottom as it spins.

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