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Questions  

A force of 6.4 N stretches a vertical spring by 0. I m. The mass that must be suspended from the spring so that it oscillates with a time period of π4 second.

a
π4kg
b
4πkg
c
1 kg
d
10 kg

detailed solution

Correct option is C

Spring constant K = 6.40.1 = 64 N/mNow T = 2πmkor π4 = 2πm64    ∴ m = 1 kg

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Two springs of spring constants k1 and k2 are joined in series. The effective spring constant of the-combination is given by:


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