EP CONCEPTUAL PHYSICS-ITEXT ACCESS
9th Edition
ISBN: 9780133647693
Author: Hewitt
Publisher: SAVVAS L
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Textbook Question
Chapter 2, Problem 41A
Why can’t the strong man pull hard enough to make the chain perfectly straight?
Expert Solution & Answer
To determine
To explain: The reason due to which a man is unable to pull the chain hard enough to make it perfectly straight.
Explanation of Solution
Introduction:
At equilibrium position or condition, net force exerted on an object is zero.
Consider the given situation diagram is shown below.
A strong man is pulling a chain in X-direction, while force due to gravity (weight of book) exerted on chain in Y-direction. As the force applied by man increases, chain becomes straighter. So, the net force exerted in X-direction becomes zero but, due to weight of book net force in Y-direction does not become zero. Due to this chain slightly bents downwards.
Conclusion:
A strong man cannot make chain perfectly straight because gravitational pull on chain is in downward direction.
Chapter 2 Solutions
EP CONCEPTUAL PHYSICS-ITEXT ACCESS
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