A small mass M attached to a string slides in a circle (x) on a frictionless hor

Question

A small mass M attached to a string slides in a circle (x) on a frictionless horizontal table, with the force F providing the necessary tension (see figure). The force is then increased slowly and then maintained constant when M travels around in circle (y). The radius of circle (y). M's angular momentum at y is .... that at x. B M's kinetic energy at y is four times that at x. B M's angular velocity at y is four times that at x. B While going from x to y, there is a torque on M greater than As M moves from x to y, the work done by F is .... 0.

Explanation / Answer

a)

less than

L1 = 4 L1

2 )

KEy= 16 KEy

M's kinetic energy at y is four itmes that at x is false

3 )

it is false

wy = 16 wx

4)

false

the force acting along the radius that is F.r having only the force

5 )

greater than

KEy = 4 X KEx

KEy - KEx = 3 X KEx

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