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Question

A sphere is pure rolling on a horizontal surface such that its centre moves with 5 m/s as shown in figure. What is the magnitude of velocity of point B on this sphere?


A
5 m/s
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B
53 m/s
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C
52 m/s
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D
52 m/s
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Solution

The correct option is C 52 m/s
The net velocity of B is the vector sum of two velocities. I hope you remember what you just learned!

where v = Rω = 5 m/s
VnetB=25+25
=52m/s.

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