Physics · Rotational Mechanics
A thin circular ring of mass M and radius R is rotating with a constant angular velocity ω = 2 rad s-1 in a horizontal plane about an axis vertical to its plane and passing through the center of the ring. If two objects each of mass m are attached gently to the opposite ends of a diameter of the ring, the ring will then rotate with an angular velocity (in rad s-1) of:
- 12(M + 2m)ωM
- 2MωM + 2m✓
- 3(M + 2m)ω2M
- 4MωM + m
Correct answer
MωM + 2m
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