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JEE Advanced 2020 Full Test 2 Paper 2

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Question : 16 of 54

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An old record player of 10cm radius turns at 10rad∕s while mounted on a 30∘ incline as shown in the figure. A particle of mass m can be placed anywhere on the rotating record. If the least possible coefficient of friction µ that must exist for no slipping to occur is µ, find 2√3µ. [Take g=10m∕s2]

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