# HW09_7 - 3 kg/m 3 3. Y&F 14.26 Lady trying to keep her...

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P1112 Spring 2009 Homework #7, due second section of week of March 2. Quiz on HW#7 first section of week of March 9. Reading: 6.3, 7.1 - 7.3, 14.1 – 14.3 Not all concepts will be covered in class – you are responsible for all material in the reading and in the homework problems. Problems: 1. Y&F 14.10 Blood pressure in head and feet. 2. A container of 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 water is 1 x 10
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Unformatted text preview: 3 kg/m 3 3. Y&F 14.26 Lady trying to keep her feet dry. 4. 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. 5. Y&F 7.58 Two animals on wooden rod. 6. Y&F 6.82 Same idea as 6.7, but easier using energy conservation! 7. Y&F 7.74 Package on incline with friction, spring at the bottom....
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## This note was uploaded on 12/25/2009 for the course PHYS 1112 taught by Professor Leclair,a during the Spring '07 term at Cornell University (Engineering School).

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