1. Emma pushes a 45.0kg box across a level floor with an applied force of 153N [30° above horizontal]. The force of friction acting is 115N [backwards]. She pushes it 15.0m forward. a. Find the work done by the applied force. Fn 300 • Fwd b. Find the work done by friction. Fg c. Find the work done by gravity. d. Find the work done by the normal force. e. Did the box gain or lose energy?

1. Emma pushes a 45.0kg box across a level floor with an applied force of 153N [30° above horizontal]. The force of friction acting is 115N [backwards]. She pushes it 15.0m forward. a. Find the work done by the applied force. Fn 300 • Fwd b. Find the work done by friction. Fg c. Find the work done by gravity. d. Find the work done by the normal force. e. Did the box gain or lose energy?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 54P: A 5.0-kg box has an acceleration of 2.0m/s2 when it is pulled by a horizontal force across a surface...

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