a uniform disc of radius R is first spinned to ang velocity 'w'.
and the placed with its flat face on the horizontal surface. how long will the disc be rotating if the friction coeff = 'u'.
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1 Answers
49you need to calculate torque...
consider friction is uniform throughout (obviously except at the centre)
next: consider circular elements... friiction = f(x)
net friction = ∫f(x)dx
