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1.	When too many people stand on a bridge it collapses, why?
	A.	Due to increase in stress
	B.	Due to overweight
	C.	Due to improper construction
	D.	Due to friction

	Answer: Option A


	Explanation:
	Stress is the force per unit area experienced by the body and strength is the ability to withstand the stress. When stress becomes greater than strength, accidents happen.



	Tutorial Link:

Published by:Michael Daani

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