Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Question
Chapter 7A, Problem 1PLA
To determine
Whether the statement is true or false.
Expert Solution & Answer
Answer to Problem 1PLA
Option (a) True
Explanation of Solution
Kinetic friction is the force that acts between moving surfaces that are in mutual interaction with each other. This force always acts in the direction opposite to the motion of the object on the surface.
Therefore, the given statement is true.
Conclusion:
Option (a) is correct. For kinetic friction the direction of the frictional force on a given object is always opposite the direction of that object’s motion.
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Chapter 7A Solutions
Physics Laboratory Manual
Ch. 7A - Prob. 1PLACh. 7A - Static friction is (a) always less than the...Ch. 7A - The two coefficients of friction discussed in this...Ch. 7A - Suppose a block of mass 25.0 kg rests on a...Ch. 7A - For the laboratory measurement of the static...Ch. 7A - Prob. 6PLACh. 7A - Prob. 7PLACh. 7A - For either type of coefficient of friction, what...
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- For the cart traveling on the level track, in which direction does the friction force act? (The positive x direction is defined as in the direction of motion .) a) negative y direction b) positive y direction c) negative x direction d) positive x directionarrow_forwardA mass m is being pushed by a horizontal force F of magnitude 209.0 N. The coefficient of kinetic friction between the two surfaces is 0.4. What is the magnitude of the acceleration of this mass as it gets to be pushed up the ramp?arrow_forwardIf the coefficient of kinetic friction, , between the block and the surface is 0.30 and the magnitude of the frictional force is 80.0 N, what is the weight of the block? ( Assume the block is on a horizontal surface)arrow_forward
- The maximum possible value for the coefficient of static friction is a. 0.50 b. 1.00 c. a value up to but not quite 1.00 d. greater than 1.00arrow_forwardA 4.00 kg block rests on a 30 degree incline. If the coefficient of the static friction between the block and the incline is 0.700, what magnitude of horizontal force F must act on the block to start it moving up the incline?arrow_forwardA 20 kg sled is being pulled along the ground by a 100 N force directed 30° above horizontal. Given the coefficient of kinetic friction between the sled and the snow is 0.100, what is the magnitude of the friction acting on the sled?arrow_forward
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