Question:

A coin is placed on a disc. The coefficient of
friction between the coin and the disc is µ. If the distance of the coin from the center of the disc is r, the maximum angular velocity which can be given to the disc, so that the coin does not slip away, is : 

                                                         JEE-2024         

Solution:                
A coin is placed on a disc. The coefficient of friction between the coin and the disc is µ. If the distance of the coin from the center of the disc is r, the maximum angular velocity which can be given to the disc, so that the coin does not slip away, is : JEE-2024

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