The figure shows three forces applied to a trunk that moves leftward by 2.71 m over a frictionless floor. The force magnitudes are F₁ = 5.40 N, F2 = 8.88 N, and F3 = 2.71 N, and the indicated angle is 8 = 60°. (a) During the displacement, what is the net work done on the trunk by the three applied forces, the gravitational force, and the normal force? (b) Is there a net transfer of energy to or from the trunk? (c) Does the kinetic energy of the trunk increase or decrease?
The figure shows three forces applied to a trunk that moves leftward by 2.71 m over a frictionless floor. The force magnitudes are F₁ = 5.40 N, F2 = 8.88 N, and F3 = 2.71 N, and the indicated angle is 8 = 60°. (a) During the displacement, what is the net work done on the trunk by the three applied forces, the gravitational force, and the normal force? (b) Is there a net transfer of energy to or from the trunk? (c) Does the kinetic energy of the trunk increase or decrease?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter6: Energy Of A System
Section6.2: Work Done By A Constant Force
Problem 6.2QQ
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