How much has the gravitational potential energy

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Reference no: EM1313128

Q1. A 1300 {rm kg} wrecking ball hangs from a 30 {rm m}-long cable. The ball is pulled back until the cable makes an angle of 24.0^circle with vertical. By how much has the gravitational potential energy of the ball changed?

Q2. A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.40 m. The cylinder is suspended some meters off the ground with its axis oriented horizontally, and turns on that axis without friction.

Reference no: EM1313128

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