Suppose the worker in Exercise 6.3 pushes downward at an angle of 30 below the horizontal. (a)
Question:
(a) What magnitude of force must the worker apply to move the crate at constant velocity?
(b) How much work is done on the crate by this force when the crate is pushed a distance of 4.5 m?
(c) How much work is done on the crate by friction during this displacement?
(d) How much work is done on the crate by the normal force By gravity?
(e) What is the total work done on the crate?
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IDENTIFY The forces are constant so Eq 62 can be used to calculate the work Constant speed implies a ...View the full answer
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Related Book For 
Vector Mechanics for Engineers Statics and Dynamics
ISBN: 978-0073212227
8th Edition
Authors: Ferdinand Beer, E. Russell Johnston, Jr., Elliot Eisenberg, William Clausen, David Mazurek, Phillip Cornwell
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