Concept explainers
(a)
The amount of force applied to the top block.
(a)
Answer to Problem 93P
The amount of force applied to the top block is
Explanation of Solution
Below figure shows force acting on top and bottom block due to rope on top.
Write the expression for net force along vertical of Mass 1.
Here,
The normal force
The top block will slip if it is pulled with more force than the maximum static friction force.
Here,
Use
Friction is the only force acting on the block which is not being pulled.
Write the expression for the friction force on the mass not attached to the rope.
Here,
Equate (I) and (II).
Write the expression for the pulling force.
Here,
Conclusion:
Here,
Substitute
Substitute
Therefore, the amount of force applied to the top block is
(b)
The amount of force applied to the bottom block.
(b)
Answer to Problem 93P
The amount of force applied to the bottom block is
Explanation of Solution
Now
Rewrite equation (III).
Conclusion:
Here,
Substitute
Substitute
Therefore, the amount of force applied to the bottom block is
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Chapter 3 Solutions
College Physics, Volume 1
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