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 0.4, the minimum magnitude force he needs to start the crate moving (in N) is ? g = 10 m/s² а. 31 b. 50 с. 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 0.4, the minimum magnitude force he needs to start the crate moving (in N) is ? g = 10 m/s² а. 31 b. 50 с. 72 d. 97

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

q16

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 0.4, the minimum magnitude force he
needs to start the crate moving (in N) is ? g = 10 m/s²
а.
31
b.
50
с.
72
d.
97

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