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Manipal MET2021PhysicsOscillations

A mass M is attached to a string, oscillates with a period of 2 s . If the mass is increased by 4 kg . The time period increases by 1 s . Assuming, that Hooke's law is obeyed, the initial mass M was :

Options

  1. A3.2 kg
  2. B1 kg
  3. C2 kg
  4. D8 kg

Correct answer

A. 3.2 kg

Step-by-step solution

T=2=2 M k and 2+1=2 M+4 k or 3=2 M+4 k 4 9 = M M+4 or 4 M+16=9 M or M= 16 5 =3.2 ~kg

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