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A mass M, attached to a spring, oscillat...

`A` mass `M`, attached to a spring, oscillates with a period of `2 s`. If the mass is increased by `4kg`, the time period increases by one second. Assuming that Hooke's law is obeyed, find the initial mass `M`.

Text Solution

Verified by Experts

The correct Answer is:
B, C
`2 = 2pi sqrt((M)/(k))` …(i)
`3 = 2pi sqrt ((M + 4)/(k))` …(ii)
Solving two equations, we get
`M = 3.2kg`
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