1. The problem statement, all variables and given/known data A 200g, 40-cm-diameter turntable rotates on frictionless bearings at 60 rpm. A 20g block sits at the center of the turntable. A compressed spring shoots the block radially outward along a frictionless groove in the surface of the turntable. What is the turntable's rotation angular velocity when the block reaches the outer edge? 2. Relevant equations 1/2Iw^2 I = 1/2MR^2 3. The attempt at a solution I did: 1/2Iw^2 = 1/2Iw^2 1/2(1/2(0.200)(0.20)^2)(2pi)^2 = 1/2(1/2(0.200)+0.020)(wf) wf = 32.898 rad/sec Does that seem right? Thanks!