Answer to Question #18165 in Mechanics | Relativity for john

Question

A small block with the mass (M) is resting on a frictionless horizontal tabletop. The small block is a distance (r1) from a hole that is in the center of the table. A light, stretchless string is tied to the small block, and passes through the hole that is in the center of the table, which a larger block with mass (M2) is suspended from and is attached to the free end of the string. The small block, also considered a particle, is set into uniform circular motion with radius (r) and speed (v).

A) find the value of (v) for the smaller block, inorder for the larger block not to move

B) if the large block is pulled down, and the small block is now rotating at a distance (r2) what is the new velocity (v)?

C) how much net work is when pulling down the larger mass (bigger block)?