Name: ______________________

Quiz 7

05/13/2005

Ch. 9

1) A merry-go-round of radius 2m has an angular acceleration of. At t=0 the merry-go-round is at rest. What is the total distance that a child

a) on the edge (at a radius of 2m) moved after 10s?

b) half way to the center (at a radius of 1m) moved after 10s?

c) at the center (at a radius of 0m) moved after 10s?

2) Three equal masses M are placed at the corners of a right triangle with the right angle corner at the origin. One particle at the origin , one at , and one at .

a) What is the moment of inertia about the z axis?

b) What is the moment of inertia about the z axis if M=4 kg, A=1.6m, and B=2.4m?