ps5b12 - Physics 111.01 October 1 2008 PS 5b(12 Problem 1...

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Physics 111.01 October 1, 2008 PS 5b (12) Problem 1. To test the effects of high acceleration on the human body, NASA has constructed a large centrifuge at the Manned Spacecraft Center in Houston. In this device, astronauts are placed in a capsule that moves in a circular path of radius 15 m. If the astronauts in this centrifuge experience a centripetal acceleration 7 times that of gravity (or " 7 g's"), what must be the speed of the capsule? v r a centripetal Solution. The centripetal acceleration is given by 2 centripetal v a r = Solving for the speed v gives () 2 centripetal 2 centripetal 7*9.8 m/s 15 m 32.08 m/s v a r va r = == = Problem 2 = Walker P. 6-50. Driving in your car with a constant speed of 12 m/s, you encounter a bump in the road that has a circular cross section, as indicated in Figure 6-35. If the radius of curvature of the bump is r = 28 m, find the apparent weight of a 68 kg person in your car as you pass over the top of the bump.
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Solution. First we calculate the centripetal acceleration of the car going around this curve in the vertical plane.
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This note was uploaded on 05/13/2010 for the course PHYSICS 111 taught by Professor Staff during the Fall '08 term at S.F. State.

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ps5b12 - Physics 111.01 October 1 2008 PS 5b(12 Problem 1...

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