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 (x) is twice the radius of circle (y).

a)M's angular momentum at x is .... that at y.

b)While going from x to y, there is no torque on M

c)As M moves from x to y, the work done by F is .... 0.

d) M's kinetic energy at x is half that at y.

e) M's angular velocity at x is half that at y.

**above answer choices are either: true, false, less than, greater than, or equal to**

Explanation / Answer

a) Lesser than (F does work, increases (omega)) b) Correct c) (F(x-y)) d) False e) False

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