FUNDAMENTALS OF PHYSICS - EXTENDED
12th Edition
ISBN: 9781119773511
Author: Halliday
Publisher: WILEY
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Chapter 12, Problem 4Q
A ladder leans against a frictionless wall but is prevented from falling because of friction between it and the ground. Suppose you shift the base of the ladder toward the wall. Determine whether the following become larger, smaller, or stay the same (in magnitude): (a) the normal force on the ladder front the ground, (b) the force on the ladder from the wall, (c) the static frictional force on the ladder from the ground, and (d) the maximum value fs,max of the static frictional force.
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A ladder leans against a frictionless wall but is prevented from falling because of friction between it and the ground. Suppose you shift the base of the ladder toward the wall. Determine whether the following become larger, smaller, or stay the same (in magnitude): (a) the normal force on the ladder from the ground, (b) the force on the ladder from the wall, (c) the static frictional force on the ladder from the ground, and (d) the maximum value fs,max of the static frictional force.
A 3.0-m-long ladder leans against a wall at an angle of 60° with respect to the floor. What is the minimum value of μs , the coefficient of static friction with the ground, that will prevent the ladder from slipping? Assume that friction between the ladder and the wall is negligible.
A ladder of length 12.0 m with a mass of 40.0 kg leans against a smooth wall. The ladder makes a 35.0o angle with the horizontal. Draw an adequate free body diagram of the ladder and determine the minimum coefficient of static friction between the ladder and the ground necessary to prevent the ladder from slipping.
Chapter 12 Solutions
FUNDAMENTALS OF PHYSICS - EXTENDED
Ch. 12 - A ladder leans against a frictionless wall but is...Ch. 12 - The table gives the initial lengths of three reds...Ch. 12 - An automobile with a mass of 1360 kg has 3.05 m...Ch. 12 - An archers bow is drawn at its midpoint until the...Ch. 12 - ILWA rope of negligible mass is stretched...Ch. 12 - A scaffold of mass 60 kg and Length 5.0 m is...Ch. 12 - A 75 kg window cleaner uses a 10 kg ladder that is...Ch. 12 - SSMA meter stick balances horizontally on a...Ch. 12 - A uniform cubical crate is 0.750 m on each side...Ch. 12 - A door has a height of 2.1 m along a y axis that...
Ch. 12 - SSM WWWA cubical box is filled with sand and...Ch. 12 - A crate, in the form of a cube with edge lengths...Ch. 12 - SSM ILWA horizontal aluminum rod 4.8 cm in...Ch. 12 - After a fall, a 95 kg rock climber finds himself...Ch. 12 - A uniform ladder whose length is 5.0 m and whose...Ch. 12 - A mine elevator is supported by a single steel...Ch. 12 - A solid copper cube has an edge length of 85.5 cm....Ch. 12 - A 73 kg man stands on a level bridge of length L....Ch. 12 - SSMA uniform cube of side length 8.0 cm rests cm a...Ch. 12 - A pan balance is made up of a rigid, massless rod...Ch. 12 - Prob. 76PCh. 12 - Prob. 77PCh. 12 - Prob. 78PCh. 12 - Prob. 79PCh. 12 - Prob. 80PCh. 12 - Prob. 81PCh. 12 - Prob. 82PCh. 12 - Prob. 83PCh. 12 - Prob. 84PCh. 12 - Prob. 85P
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