QUESTION 23A block is at rest on a rough inclined surface as shown in the figure. Which of the following statements is true about theforce of friction acting on the block?The force of friction acting on the block is less than the force of gravity acting on the blockO The force of friction acting on the block is proportional to the normal force acting on the blockThe force of friction acting on the block is greater than the force of gravity acting on the blockThe force of friction acting on the block is equal to the force of gravity acting on the blockQUESTION 24ntsComplete the following sentence. Centripetal accelerationdepends on the speed and radius of a particle following a circular trajectory.does not change in direction.is a scalar quantity.occurs when the speed of an object is increased as it approaches a turn in its trajectory. A car is rounding a turn on a road that is banked at some angle with respect to the horizontal. The road is covered withice and there is no friction between the road and the tires. which of the following forces is responsible for keeping thecar on its circular path?The horizontal component of the force of gravityIt is impossible for the car to stay on a circular path in this situationThe vertical component of the force of gravityThe horizontal component of the normal forceThe vertical component of the normal forceComplete the following sentence. Centripetal forcesenable objects to follow circular trajectories with constant speed.enable objects to follow circular trajectories with constant acceleration.O are described by Hooke's law for springs.double in magnitude when an object's speed in uniform circular motion is doubled.OOOO

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QUESTION 23 A block is at rest on a rough inclined surface as shown in the figure. Which of the following statements is true about the force of friction acting on the block? O The force of friction acting on the block is less than the force of gravity acting on the block The force of friction acting on the block is proportional to the normal force acting on the block The force of friction acting on the block is greater than the force of gravity acting on the block The force of friction acting on the block is equal to the force of gravity acting on the block

QUESTION 23 A block is at rest on a rough inclined surface as shown in the figure. Which of the following statements is true about the force of friction acting on the block? O The force of friction acting on the block is less than the force of gravity acting on the block The force of friction acting on the block is proportional to the normal force acting on the block The force of friction acting on the block is greater than the force of gravity acting on the block The force of friction acting on the block is equal to the force of gravity acting on the block

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

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 32P: A car is stuck in the mud. A tow truck pulls on the car with the arrangement shown in Fig. P4.32....

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The manager of a department store is pushing horizontally with a force of magnitude 200 N on a box of shirts. The box is sliding across the horizontal floor with a forward acceleration. Nothing else touches the box. What must be true about the magnitude of the force of kinetic friction acting on the box (choose one)? (a) It is greater than 200 N. (b) It is less than 200 N. (c) It is equal to 200 N. (d) None of those statements is necessarily true.
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