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?)
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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![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?)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3a5f950e-b7db-4166-9de0-3f0058e49e12%2Ffc7b41e0-b4ad-465f-b194-ed06fd0a99ac%2Fuj3l1tc_processed.png&w=3840&q=75)
Transcribed Image Text: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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