EXAMPLES. (1) A box weighing 100 lb is pushed 20 ft along a level floor at constant velocity by a horizontal force. The coefficient of sliding friction between box and floor is 0.30. How many foot-pounds of work are done by the force? The force required to maintain the motion of the box is 30 lb. Since the distance moved in the direction of the force is 20 ft, the work done is 600 foot-pounds.

EXAMPLES. (1) A box weighing 100 lb is pushed 20 ft along a level floor at constant velocity by a horizontal force. The coefficient of sliding friction between box and floor is 0.30. How many foot-pounds of work are done by the force? The force required to maintain the motion of the box is 30 lb. Since the distance moved in the direction of the force is 20 ft, the work done is 600 foot-pounds.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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