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Q. A block of mass m is suspended from the string a height h above the ground. The string is wrapped around a disk shaped pulley with mass m and radius R. Find out the tension T in the string. (The answer should be in terms of variables). Rotational energy of disk shaped pulley ( 1/2mr^2)

Q. An ice hockey puck slides along the ice at 12.00 {rm m/s}. A hockey stick delivers an impulse of 4.00 {rm kg cdot m/s} causing puck to move off in the opposite direction with the same speed. What is the mass of the puck?

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