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A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with the spring initially unstretched. The maximum extension produced in the length of the spring will be:
Options
(a) 2 Mg/k
(b) 4 Mg/k
(c) Mg/2k
(d) Mg/k
Correct Answer:
Mg/k
Explanation:
Restoring force, f’ = – kx. where x is the extension produced in the spring.
Weight of the mass acting downward = Mg.
In equilibrium kx = Mg, x= Mg / k
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Topics: Oscillations
(58)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A car is moving with uniform acceleration. It covers 200 m in 2 sec and 220 m
- The maximum particle velocity in a wave motion is half the wave velocity.
- If the number of radius of ²⁷Al is 3.6 Fermi, the approximate nuclear radius
- The kinetic energy needed to project a body of mass m from the surface of earth
- The magnetic flux linked with a circuit of resistance 100Ω increases from 10 to 60 Wb.
Topics: Oscillations (58)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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