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A bead is contrained to move on rod in g...

A bead is contrained to move on rod in granvity free space as shown in figure. The rod rotating with ,angular velocity and angulnr acceleration `alpha` about its end. If `mu` is coefficient of friction. Mark the correct option. ( Rod rotates in the plane of paper.)

A

If `mu=(omega^(2))/(alpha)` friction ion on bead is static in nature

B

If `mu gt=(omega^(2))/(alpha)` friction on bead is kinetic in nature

C

If `mu lt=(omega^(2))/(alpha)` friction is static

D

If bead does not slide relative to rod. Friction will not exist between bead and rod.

Text Solution

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The correct Answer is:
A
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