Two metal disks, one with radius R1 = 2.61cm and mass M1 = 0.800kg and the other with radius R2 = 4.85cm and mass M2 = 1.54kg , are welded together and mounted on a frictionless axis through their common center. (Figure 1) .

Part A

What is the total moment of inertia of the two disks?

Part B

A light string is wrapped around the edge of the smaller disk, and a 1.50-kg block, suspended from the free end of the string. If the block is released from rest at a distance of 2.10m above the floor, what is its speed just before it strikes the floor?

Part C

Repeat the calculation of part B, this time with the string wrapped around the edge of the larger disk.

R1 1.50 kg