A person pushes a box of mass m = 25 kg in a straight line along a rough floor. The applied force F has magnitude 85 N and acts downward at an angle 0 = 10° with respect to the horizontal, as shown below. The box is initially at rest at the position x, = 0 m, and it has speed v2 = 0.55 m/s at position x2 = 3.50 m. a). Find the coefficient of friction between the box and the floor. b). What is the net work done? c). How much work (magnitude and sign) is done by the friction force? (This problem involves constant acceleration, Newton's Laws, and work!)

A person pushes a box of mass m = 25 kg in a straight line along a rough floor. The applied force F has magnitude 85 N and acts downward at an angle 0 = 10° with respect to the horizontal, as shown below. The box is initially at rest at the position x, = 0 m, and it has speed v2 = 0.55 m/s at position x2 = 3.50 m. a). Find the coefficient of friction between the box and the floor. b). What is the net work done? c). How much work (magnitude and sign) is done by the friction force? (This problem involves constant acceleration, Newton's Laws, and work!)

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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