Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
4th Edition
ISBN: 9780133953145
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 1CQ
An elevator suspended by a cable is descending at constant velocity. How many forcevector would be shown on a free-body diagram? Name them.
Expert Solution & Answer
To determine
The force vectors acting on the elevator under given conditions
Explanation of Solution
The elevator is descending at a constant velocity.
Since the elevator is descending at a constant velocity, it experiences no acceleration. Therefore, the net force acting on the elevator is zero. The elevator is supported by the cable. Therefore, the tension of the cable acts upward. The other force on the elevator is its weight. The situation is explained by the free-body diagram given below.
When the net force acting on the elevator is zero and two forces act on it, both forces will be equal in magnitude and opposite in direction.
Conclusion:
There are two forces acting on the elevator when it is descending with a constant velocity. The forces are the tension of the cable and the weight of the elevator.
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Chapter 5 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
Ch. 5 - An elevator suspended by a cable is descending at...Ch. 5 - A compressed spring is pushing a block across a...Ch. 5 - A brick is falling from the roof of a three-story...Ch. 5 - In FIGURE Q5.4 block B is falling and dragging...Ch. 5 - You toss a ball straight up in the air....Ch. 5 - A constant force applied to A causes A to...Ch. 5 - An object experiencing a constant force...Ch. 5 - An object experiencing a constant force...Ch. 5 - If an object is at rest, can you conclude that...Ch. 5 - If a force is exerted on an object, is it possible...
Ch. 5 - Is the statement “An object always moves in the...Ch. 5 - Prob. 12CQCh. 5 -
13. Is it possible for the friction force on an...Ch. 5 -
14. Suppose you press your physics book against...Ch. 5 - FIGURE Q5.15 shows a hollow tube forming...Ch. 5 - Prob. 16CQCh. 5 - Which of the following are inertial reference...Ch. 5 - Prob. 1EAPCh. 5 - Prob. 2EAPCh. 5 - A baseball player is sliding into second base....Ch. 5 - Prob. 4EAPCh. 5 -
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Exercise 23 through 27 describe a situation. For...Ch. 5 -
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