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Unformatted text preview: He reputedly caught a 145g baseball dropped from the top of the Washington Monument which is 152m tall. Modern wind tunnel measurements suggest that the maximum speed of a dropped baseball should be about 42.7m/s. Find (a)the work done by gravity on the falling ball, (b)the net work done on the ball during its fall and (c)the work done by air resistance during the fall. 4. Use energy methods to find the speed that the baseball in problem 3 would have struck the ground if there were no air resistance. 5. 1.00kg gismos are manufactured by a machine that releases them 2.00m above the ground. A ramp with a spring at the bottom needs to be designed to stop the gismos without breaking them, as shown below. The design calls for a light spring that brings the gismos to rest in a distance of 25.0cm. Find the spring constant of the spring required....
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This note was uploaded on 03/11/2012 for the course PHYSICS 204A taught by Professor Kagan during the Fall '09 term at CSU Chico.
- Fall '09