A 12-kg crate rests on a horizontal surface and a boy pushing it with a force that is 30° below the horizontal. If the coefficient of static friction is 0.3, the minimum magnitude force he needs to start the crate moving (in N) is ? g= 10 m/s? a. 31 b. 50 C. 72 d. 97

A 12-kg crate rests on a horizontal surface and a boy pushing it with a force that is 30° below the horizontal. If the coefficient of static friction is 0.3, the minimum magnitude force he needs to start the crate moving (in N) is ? g= 10 m/s? a. 31 b. 50 C. 72 d. 97

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: The Laws Of Motion

Section: Chapter Questions

Problem 5.8P: (a) A cat with a mass of 850 kg in moving to the right with a constant speed of 1.44 m/s. What is...

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Question

A 12-kg crate rests on a horizontal surface and a boy pushing it with a force that is 30° below
the horizontal. If the coefficient of static friction is 0.3, the minimum magnitude force he
needs to start the crate moving (in N) is ?g = 10 m/s?
a.
31
b.
50
C.
72
d.
97
O 1. c

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