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A coin kept on a horizontal rotating dis...

A coin kept on a horizontal rotating disc has its centre at a distance of 0.25 cm from the axis of rotation of the disc. If `mu` is 0.2. What is the angular velocity of the disc at which the coin is about to slip off ?

A

28 rad/sec

B

2 rad/sec

C

8 rad/sec

D

2.8 rad/sec

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The correct Answer is:
D
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