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Oscillations question

2021 · Q144
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Oscillations question

2021 · Q144

NEETPhysicsOscillationsMCQ+4 / −1
A spring is stretched by 5 cm by a force 10 N. The time period of the oscillations when a mass of 2 kg is suspended by it is -
  1. A
    0.628 s
  2. B
    0.0628 s
  3. C
    6.28 s
  4. D
    3.14 s
View written solutionFree

Correct answer: A

F = Kx

10 = K ×\times× 0.05

K = 10005=200{{1000} \over 5} = 20051000​=200

T=2πmK=2π2200T = 2\pi \sqrt {{m \over K}} = 2\pi \sqrt {{2 \over {200}}} T=2πKm​​=2π2002​​

=2π10=6.2810 = {{2\pi } \over {10}} = {{6.28} \over {10}}=102π​=106.28​

= .628 s

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