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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
- The earth is assumed to be a sphere of radius R. A platform is arranged at a height R
- During mean life of a radioactive element, the fraction that disintegrates is
- A astronomical telescope has objective and eye-piece of focal lengths
- A bimetallic strip consists of metals X and Y. It is mounted rigidly at the base as shown
- When the energy of the incident radiation is increased by 20%,
Topics: Oscillations (58)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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