COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 5, Problem 43QAP
To determine
(a)
In this part we have to determine the normal force on the crate.
To determine
(b)
In this part we have to determine the fictional force on the crate.
To determine
(c)
In this part we have to determine the coefficient of kinetic friction between the crate and the floor.
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9 - The force F applied to an object with a mass of 4 kg on a horizontal plane gives an acceleration of 5 m / s2. Since the friction coefficient between the body and the acceleration is 0.25, how many N is the force F?A) 45B) 15C) 25D) 20E) 30
2) A cat with a mass of {04} kg is at rest on a roof at an angle of 34° from horizontal. The coefficient of static friction between cat paws and roof tiles is 0.70, and gravity is 10 N/kg today.
a) Draw a Force Body Diagram of the cat, labelling and calculating all forces.
b) Draw a 2nd FBD of the cat if the angle of the roof was 74° from horizontal (steeper). Will the cat be able to stay on the roof at this angle? Justify with calculations why or why not?
c) If the coefficient of kinetic friction between cat and roof were zero, what would be the cat’s acceleration on the 74° roof?
1. A crate is lying on a plane inclined at an angle ɵ. What is the angle between the weight of the crate and the force exerted by the plane on the crate?
a) θ - 180° b) θ c) 180° - θ d) 180°
2. An object is being acted upon by an unbalanced force if
a) it is speeding up b) it is slowing down c) it changes its direction d) all of the above
Chapter 5 Solutions
COLLEGE PHYSICS
Ch. 5 - Prob. 1QAPCh. 5 - Prob. 2QAPCh. 5 - Prob. 3QAPCh. 5 - Prob. 4QAPCh. 5 - Prob. 5QAPCh. 5 - Prob. 6QAPCh. 5 - Prob. 7QAPCh. 5 - Prob. 8QAPCh. 5 - Prob. 9QAPCh. 5 - Prob. 10QAP
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