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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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π/4kg

1 kg

1/π kg

10 kg

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detailed solution

Correct option is B

Spring constant k=Fx=6.40.1=64 N/m T=2πMk⇒π4=2πM64⇒M=1 kg

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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 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: