A 42.00kg pole vaulter running at 13 ms vaults over the, Ask an Expert

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Q. It has been suggested that rotating cylinders about 12 mi long and 3.9 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration on Earth?

Q. A 42.00kg pole vaulter running at 13 m/s vaults over the bar. Her speed when she is above the bar is 1.3 m/s. Avoid air resistance, in addition to any energy absorbed by the pole, and determine her altitude as she crosses the bar?

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