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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 ]
PhysicsOscillationsNEET
Options:
  • A 2π m s-1
  • B π m s-1
  • C 12π m s-1
  • D 1π m s-1
Solution:
2706 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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