A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.52 m/s. The pulling force is 102 N parallel to the incline, which makes an angle of 20.3° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 4.96 m. (a) How much work is done by the gravitational force on the crate? 150.52 x Does the gravitational force do positive or negative work on the crate? ) (b) Determine the increase in internal energy of the crate-incline system owing to friction. 171.41 (c) How much work is done by the 102-N force on the crate? 505.92 (d) What is the change in kinetic energy of the crate? (e) What is the speed of the crate after being pulled 4.96 m? m/s

A crate of mass 9.4 kg is pulled up a rough incline with an initial speed of 1.52 m/s. The pulling force is 102 N parallel to the incline, which makes an angle of 20.3° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 4.96 m. (a) How much work is done by the gravitational force on the crate? 150.52 x Does the gravitational force do positive or negative work on the crate? ) (b) Determine the increase in internal energy of the crate-incline system owing to friction. 171.41 (c) How much work is done by the 102-N force on the crate? 505.92 (d) What is the change in kinetic energy of the crate? (e) What is the speed of the crate after being pulled 4.96 m? 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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