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NEET 2021
Exam
NEET
Year
2021
Subject
Physics
Chapter
Oscillations

NEET 2021 · Physics · Oscillations

A spring is stretched by 5cm by a force 10N . The time period of...

A spring is stretched by 5cm5cm by a force 10N10N. The time period of the oscillations when a mass of 2kg2kg is suspended by it is :

Options

  1. A0.0628s0 . 0628s
  2. B6.28s6 . 28s
  3. C0.628s0 . 628s
  4. D3.14s3 . 14s

Correct answer

C. 0.628s0 . 628s

Step-by-step solution

Spring force, F=kxF = kx

Spring constant, k=Fx=100.05=200Nmk = \dfrac{F}{x} = \dfrac{10}{0 . 05} = 200\dfrac{\text{N}}{\text{m}}

Time period, T=2πmkT = 2\pi\sqrt{\dfrac{m}{k}}

T=2π2200=0.2π=0.628sT = 2\pi\sqrt{\dfrac{2}{200}} = 0 . 2\pi = 0 . 628\text{s}

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