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# HW_8 - P1112 Fall 2008 Homework#8 Reading 5.3 5.4 5.5 14.3...

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P1112 Fall 2008 Homework #8 Reading: 5.3, 5.4, 5.5, 14.3 Not all concepts will be covered in class – you are responsible for all material in the reading and in the homework problems. 1. A storage tank 12.0 m deep is filled with water. The top of the tank is open to air. What is the pressure at the bottom of the tank? 2. A container of sea water is placed on a scale. You then suspend a 15.0 kg solid gold statue in the water. Does the reading on the scale change, and if yes by how much? Note: the density of gold is 19.3 x 10 3 kg/m 3 and the density of sea water is 1 x 10 3 kg/m 3 3. A 0.800-kg ball is tied to the end of a string 1.60 m long and swung in a vertical circle. a) During one complete circle, starting anywhere, calculate the total work done on the ball by i) the tension in the string, ii) gravity. b) Repeat part (a) for motion along a semicircle from the lowest to the highest point on the path.

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HW_8 - P1112 Fall 2008 Homework#8 Reading 5.3 5.4 5.5 14.3...

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