I. A boy uses a rope to pull a loaded sled of mass m = 125 kg along a horizontal surface of snow at a constant acceleration a start from rest. The coefficient of kinetic friction μ between the runners and the snow is 0.10, and the angle o equals to 30°. If in 5.0 seconds, the sled reaches a horizontal velocity of 2.5 m/s, find out a) the tension T in the rope, b) the work done by the boy on the sled, c) the kinetic energy change of the sled. d) Is the work-energy theorem held in this case? Why or why not?
I. A boy uses a rope to pull a loaded sled of mass m = 125 kg along a horizontal surface of snow at a constant acceleration a start from rest. The coefficient of kinetic friction μ between the runners and the snow is 0.10, and the angle o equals to 30°. If in 5.0 seconds, the sled reaches a horizontal velocity of 2.5 m/s, find out a) the tension T in the rope, b) the work done by the boy on the sled, c) the kinetic energy change of the sled. d) Is the work-energy theorem held in this case? Why or why not?
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
Chapter5: More Applications Of Newton’s Laws
Section: Chapter Questions
Problem 4P
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