2. A 25.0-kg box of textbooks rests on a ramp that makes an angle a with the horizontal. The coefficient of kinetic friction is 0.25, and the coefficient of static friction is 0.35. (a) As the angle a is increased, find the minimum angle at which the box starts to slip. (Ans: 19.3°) (b) At this angle, find the acceleration once the box has begun to move. (Ans: 0.92 m/s?)

2. A 25.0-kg box of textbooks rests on a ramp that makes an angle a with the horizontal. The coefficient of kinetic friction is 0.25, and the coefficient of static friction is 0.35. (a) As the angle a is increased, find the minimum angle at which the box starts to slip. (Ans: 19.3°) (b) At this angle, find the acceleration once the box has begun to move. (Ans: 0.92 m/s?)

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Description: 2. A 25.0-kg box of textbooks rests on a ramp that makes an angle a with the horizontal.The coefficient of kinetic friction is 0.25, and the coefficient of static friction is 0.35.(a) As the angle a is increased, find the minimum angle at which the

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 60AP: (a) What is the minimum force of friction required to hold the system of Figure P4.74 in...

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