Question

# The figure shows mass m with velocity U. Ring is restricted to move on smooth fixed horizontal rod. The velocity of ring at that moment is :

A
U2
B
2U
C
2U3
D
3U2

Solution

## The correct option is A 2UVelocity along string remains same. VRcosθ=U VR=Ucosθ θ=60∘ VR=2U

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