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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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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Thin uniform rod of length L, cross-sectional area A and density ρ is rotated
- The electric field in a certain region is given by E=5i ̂-3ĵ kV/m. The potential
- ₉₂U²³⁵ undergoes successive disintegrations with the end product of ₈₂P²⁰³
- A hemispherical bowl of radius R is rotating about its axis of symmetry
- Under the action of a force F=cx, the position of a body changes from 0 to x.The work done
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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