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Question: Answered & Verified by Expert
A mass is suspended from a vertical spring which is executing S.H.M. of frequency 5 Hz. The spring is unstretched at the highest point of oscillation. The maximum speed of the mass is [acceleration due to gravity g=10 m s-2 ]
PhysicsOscillationsMHT CETMHT CET 2018
Options:
  • A 2π m s-1
  • B π m s-1
  • C 12π m s-1
  • D 1π m s-1
Solution:
2940 Upvotes Verified Answer
The correct answer is: 1π m s-1
T=2π m k
n= 1 2π k m
25= 1 4 π 2 k m
k=100 π 2 m
kA=mg
A= mg k
V max =ωA
= 2π T A
=2πnA
= 2π×5×mg k
Vmax=10π×m×10100π2m=1π m s-1
 

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