Motion in a Circle: True/False/Less/Greater/Equal

[gummybeargirl]

Homework Statement

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).
1) M's kinetic energy at y is four times that at x.
2) M's angular momentum at x is ... that at y.
3) M's angular velocity at x is one quarter that at y.
4) As M moves from x to y, the work done by F is ... 0.
5) While going from x to y, there is no torque on M
Each has the options of True/False/Less than/Greater than/Equal to

2. The attempt at a solution
1) False
2) Greater than
3) False
4) False
5) True

 

[jackarms]

Hey, I just saw your other post too. So, same as that one, could you first explain your reasoning for each answer? It helps a lot in seeing if you got the problem right.

 

[gummybeargirl]

Nevermind! I was able to get this one as well. My answer turned out to be
1) true
2) equal to
3) true
4) greater than
5) true