- #1
abeltyukov
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Homework Statement
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?
Homework Equations
1/2Iw^2
I = 1/2MR^2
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!