Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 43PCE
Predict/Calculate (a) Find the magnitude of the acceleration of the two blocks in Figure 6 (a) Assume the top block slides without friction on the horizontal surface. (b) If the 12-N block in Figure 6-56 (a) is replaced with a 12-N force pulling downward as in Figure 6-56 (b), is the acceleration of the sliding block greater than, less than, or equal to the acceleration calculated in part (a)? Explain. (c) Calculate the acceleration of the block in Figure 6-56 (b), assuming it slides without friction.
Figure 6-56
Problem 43
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Check out a sample textbook solutionStudents have asked these similar questions
Two blocks are supported by a pulley along an incline as shown. The lower block B has a weight of 30 lbs
and the higher block A has a weight of 20 lbs. Assume that there is friction between the blocks with
Hs = 0.15 and assume no friction between block Band the incline. Determine the angle z for which
motion is impending.
201b
301b
A
Tension in block A as a function of z can be written as TA
%3D
Tension in block B as a function of z can be written as Tây
Thus, impending motion is at z =
degrees.
10-11. Please help answer these two questions that relate to each other, thank you so much!! :))
Problem
The coefficient of friction between blocks is us = 0.4, at what angle will the block start sliding if it is initially at rest?
Solution
Let us obtain the net force in the axis perpendicular to the inclined plane.
By virtue of the first law of motion (equilibrium), the net force is
2 F perpendicular =n- Fgperpendicular
Thus, the normal force is
cos|
n = m
On the axis parallel to the inclined, the net force is
E F- Fell-s.max
Substituting the forces, we get the following:
mg
smg
By simplifying, we get the following:
tan(theta) = mus
Thus, the angle that the object will slide is:
(rounded of to the ones)
Chapter 6 Solutions
Physics (5th Edition)
Ch. 6.1 - A block rests on a rough, horizontal surface, as...Ch. 6.2 - When a mass is attached to a certain spring, the...Ch. 6.3 - Suppose the tension in the clothesline in Quick...Ch. 6.4 - Three boxes are connected by ropes and pulled...Ch. 6.5 - A system consists of an object with mass m and...Ch. 6 - A clothesline always sags a little, even if...Ch. 6 - In the Jurassic Park sequel, The Lost World, a man...Ch. 6 - When a traffic accident is investigated, it is...Ch. 6 - In a car with rear-wheel drive, the maximum...Ch. 6 - A train typically requires a much greater distance...
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