PHYS_2014_Homework_6

# PHYS_2014_Homework_6 - PHYS2014 Benton Fall 2010 OSU...

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PHYS2014 Fall 2010 Benton OSU Physics Dept. 6-1 Physics 2014: General Physics I Homework Assignment 6 Due: Friday, 15 October 2010 at the beginning of your Recitation session. 1. A 0.2 g bug is sitting at the edge of a 12” (30.48 cm) diameter phonograph turntable that is rotating at 33.33 rpm (revolutions per minute). What is the minimum coefficient of static friction, μ s , needed to keep the bug from sliding off? 2. A horse pulls a 700 kg cart at a constant speed of 2 m/s up a hill having a constant slope of 10 ° with respect to the horizontal. a) If the coefficient of rolling friction of the cart is 0.05, how much work does the horse do in 5 minutes? b) How much of that work is done to overcome friction? 3. a) Estimate the mass of the Sun based on the average distance between the Sun and the Earth and given the fact that the orbital period of the Earth is 365.25 days, b) Estimate the mass of the Earth based on the average distance between the Earth and the Moon and given the fact that the orbital period of the Moon is 27.3 days. Compare your estimates to the values printed on the back cover of your text book. 4. The Cavendish balance shown in the figure above has two large lead balls, each of mass

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## This note was uploaded on 01/10/2012 for the course PHYS 2014 taught by Professor Nandi during the Fall '08 term at Oklahoma State.

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PHYS_2014_Homework_6 - PHYS2014 Benton Fall 2010 OSU...

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