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Most Important Selected Qs for JEE AdvancedPhysicsLaws of Motion

A disc of mass m and radius R is placed over a plank of same mass m . There is sufficient friction between the disc and the plank to prevent slipping. A force F is applied at the centre of the disc. Then, the Acceleration of the plank is F Km . Find the value of K .

Correct answer

4

Step-by-step solution

aligned & f= ma ₂ & = l = 2 f mR & a ₂= F / 4 ~m , f = F / 4 aligned

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