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Question

A body is whirled in a horizontal circle of radius 20cm. It has angular velocity if 10 rad/s. What is the linear velocity at any point on the circular path?
  1. 2m/s
  2. 2 m/s
  3. 20m/s
  4. 10m/s

A
2m/s
B
10m/s
C
20m/s
D
2 m/s
Solution
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Given,

Radius of circle, r=20cm=0.2m

Angular velocity, ω=10rad/s

Linear velocity, v=r×ω=0.2×10=2m/s

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