A boy takes a 2.0-kg rock and ties it to the end of a light, uniform, 0.80-m-long rope. He then grabs the other end of the rope and swings the rock in a vertical circle. If he imparts a tension of 20 N to the rope as he swings the rock over the top of the circular motion, what will be the speed of the rock at the very top of the motion? Assume that g = 9.8 m/s2. а. 2.0 m/s b. 6.0 m/s C. 5.0 m/s d. 4.0 m/s е. 3.0 m/s

A boy takes a 2.0-kg rock and ties it to the end of a light, uniform, 0.80-m-long rope. He then grabs the other end of the rope and swings the rock in a vertical circle. If he imparts a tension of 20 N to the rope as he swings the rock over the top of the circular motion, what will be the speed of the rock at the very top of the motion? Assume that g = 9.8 m/s2. а. 2.0 m/s b. 6.0 m/s C. 5.0 m/s d. 4.0 m/s е. 3.0 m/s

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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