Verified Solution • 2025–26 Session moderate

QJEEM20Phad34: JEE Main 2020 Physics - Class 11 JEEM20Phad34 Solution: A block of mass m attached to a massless spring is performing…

A block of mass m attached to a massless spring is performing oscillatory motion of amplitude ‘A’ on a frictionless horizontal plane. If half of the mass of the block breaks off when it is passing through its equilibrium point, the amplitude of oscillation for the remaining system become fA. The value of f is :

Multiple Choice Options

  • A 1
  • B 12
  • C 2
  • D 12

Step-by-Step Verified Solution

At equilibrium position

V0 = V

V0=ω1A=KmA .....(i)

V=ωA1=Km2A1 .....(ii)

∴ A1=A2

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