Prove your wisdom in Rotaional dynamics

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Soumen Goswami (2446)

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The bottommost point slips backwards. So friction acts forward with its max value 5 (Assuming g = 10). The acceleartion is . The net torque is 95, so the angular accelerations . The velocity of the centre is then and angular velocity of the disk at any time is . Here is never possible. So, friction will keep on acting and the point of contact will keep on slipping. The work done is

All men dream but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity; but the dreamers of the day are dangerous men, for they may act their dream with open eyes to make it possible.

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