In the figure, a block weighing 23.0 N is held at rest against a vertical wall by a horizontal force of magnitude 61 N. The coefficient of static friction between the wall and the block is 0.55, and the coefficient of kinetic friction between them is 0.38. In six experiments, a second force P is applied to the block and directed parallel to the wall with these magnitudes and directions: (a)35 N, up, (b) 13 N, up, (c)48 N, up, (d)62 N, up, (e)9.1 N, down, and (f)19 N, down. In each experiment, what is the frictional force on the block, including sign? Take the direction up the wall as positive, and down the wall as negative. Next, calculate the acceleration, including sign, of the block in each case. Note that acceleration is zero if the block does not move. (g) What is the acceleration in (a)? (h) What is the acceleration in (b)? (i) What is the acceleration in (c)? (i) What is the acceleration in (d)? (k) What is the acceleration in (e)? (1) What is the acceleration in (f)?
In the figure, a block weighing 23.0 N is held at rest against a vertical wall by a horizontal force of magnitude 61 N. The coefficient of static friction between the wall and the block is 0.55, and the coefficient of kinetic friction between them is 0.38. In six experiments, a second force P is applied to the block and directed parallel to the wall with these magnitudes and directions: (a)35 N, up, (b) 13 N, up, (c)48 N, up, (d)62 N, up, (e)9.1 N, down, and (f)19 N, down. In each experiment, what is the frictional force on the block, including sign? Take the direction up the wall as positive, and down the wall as negative. Next, calculate the acceleration, including sign, of the block in each case. Note that acceleration is zero if the block does not move. (g) What is the acceleration in (a)? (h) What is the acceleration in (b)? (i) What is the acceleration in (c)? (i) What is the acceleration in (d)? (k) What is the acceleration in (e)? (1) What is the acceleration in (f)?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter5: More Applications Of Newton’s Laws
Section: Chapter Questions
Problem 61P
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