A simple pendulum 3 m in length is released with a push, Ask an Expert

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a simple pendulum, 3 m in length, is released with a push when the support string is at an angle of 30 degrees force vertical. If the initial speed of the suspended mass is 1.2 m/s when at the release point, what is its speed at the swing.

A parachutist of mass 50kg jumps out of an airplane at a hight of 1000m. The parachute deploys, and he hits the ground with a velocity of 5m/s. Find the average resistance on the parachutist.

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