As F=−kx
JEE Main 2013 — Physics Waves & Oscillations
2013mcqmedium
A mass m=1.0 kg is put on a flat pan attached to a vertical spring fixed on the ground. The mass of the spring and the pan is negligible. When pressed slightly and released, the mass executes simple harmonic motion. The spring constant is 500 N/m. What is the amplitude A of the motion, so that the mass m tends to get detached from the pan ? (Take g=10 m/s2 ). The spring is stiff enough so that it does not get distorted during the motion. 
Official previous-year question
Held on 22 Apr 2013 · Verified 6 Jul 2026.
Options
- A
A>2.0 cm
- B
A=2.0 cm
- C
A<2.0 cm
- D
A=1.5 cm
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