Physics Fundamentals
Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
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Chapter 5, Problem 7Q
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A coin kept on a horizontal rotating disc has its center at a distance of 0.1 m from the axis of rotation of the disc. If the coefficient of friction between the coin and the disc is 0.25, find the speed of the disc at which the coin would be about to slip off.
When you take your 1900-kg car out for a spin, you go arounda corner of radius 53 m with a speed of 13 m>s. The coefficient ofstatic friction between the car and the road is 0.88. Assuming yourcar doesn’t skid, what is the force exerted on it by static friction?
250 kg concrete wheel with a radius of 1.50 m is being pulled up a hill by a 725 kg cow, with a rope attached to the wheel and the cow. There is a 35.5 cm tall rock protruding out of the hill.  Calculate the tension in the rope when the wheel is just starting to lift off of the hill to go over the protruding rock? What's the minimum coefficient of static friction between the cow and the hill for the cow to be able to pull the wheel over the rock?
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What Is Circular Motion? | Physics in Motion; Author: GPB Education;https://www.youtube.com/watch?v=1cL6pHmbQ2c;License: Standard YouTube License, CC-BY