A force of 6.4 N stretches a vertical spring by 0.1 m. The mass that must be suspended from the spring so that it oscillates with a period of (π/4) sec is:
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a
π/4kg
b
1 kg
c
1/π kg
d
10 kg
answer is B.
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Detailed Solution
Spring constant k=Fx=6.40.1=64 N/m T=2πMk⇒π4=2πM64⇒M=1 kg