Solved: A person pushes a 14.0-kg lawn mower at constant
Chapter 4, Problem 26(choose chapter or problem)
A person pushes a 14.0-kg lawn mower at constant speed with a force of F = 88.0 N directed along the handle, which is at an angle of 45.0 to the horizontal (Fig. 4-45). (a) Draw the free-body diagram showing all forces acting on the mower. Calculate (b) the horizontal friction force on the mower, then (c) the normal force exerted vertically upward on the mower by the ground, (d) What force must the person exert on the lawn mower to accelerate it from rest to 5 m/s in 2.5 seconds, assuming the same friction force?
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