- #1

MikeMai

- 5

- 0

## Homework Statement

1.Is it possible to calculate the torque acting on a rigid object without specifying an origin? Is the torque independent of the location of the origin?

2.A mouse is initially at rest on a horizontal turntable mounted on a frictionless vertical axle. If the mouse begins to walk clockwise around the perimeter of the table, what happens to the turntable? Explain using Newton's Laws.

## Homework Equations

No,equation. Need to explain in words.

## The Attempt at a Solution

for #1 i put no, we can't find torque without a specifying an origin since we won't know the length. But i don't get the 2nd part about the independent thing.

for #2 i put,

If the mouse is initially at rest on a horizontal turntable and walks at a clockwise direction, then the horizontal turntable will move in a counterclockwise direction. Using Newton's third law, the mouse is walking and does not accelerate so all the forces equals zero. Since all the forces equals to zero that means the forces the turntable exerts back the equal but opposite force back to the mouse.