Wave Motion Questions and Answers Discussion Page.

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2.	The time period of mass suspended from a spring is T. If the spring is cut into four equal parts and the same mass is suspended from one of the parts, then the new time period will be?
	A.	T/4
	B.	T
	C.	T/2
	D.	2T

	Answer: Option C


	Explanation:
	T=2π√(m/k), k=F/x When the spring is cut into four equal parts, k^‘=F/(x/4)=4(F/x)=4k T^‘=2π√(m/k^‘)=2π√(m/4k)=T/2.



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Published by:Michael Daani

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