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A person pushes a 14.0-kg lawn mower at constant speed with a force of F = 88.0 N directed along

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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 45.0o 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 1.5m/s in 2.5 seconds, assuming the same friction force?


45°
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45°

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a We assume that the mower is being pushed to the right F is the friction f…View the full answer


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Physics

Physics

ISBN: 978-0321976444

5th edition

Authors: James S. Walker

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Question Posted: April 30, 2010 00:09:22
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In Physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. In this video, the concept of force and torque is demonstrated with the practical application of changing the flat tire of the car.

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