A cylinder is rolling purely on a horizontal surface. The velocity of its centre of mass is 10 ms forward. What is its angular velocity about its central axis if its radius is 5m?
A
4rads
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B
8rads
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C
2rads
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D
Insufficient data
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Solution
The correct option is C2rads If pure rolling, v = Rω ω=vR ω=105=2rads.