Oscillations - Result Question 44
48. A mass of is put on a flat pan attached to a vertical spring fixed on the ground as shown in the figure. The mass of the spring and the pan is negligible. When pressed slightly and released the mass executes a simple harmonic motion. The spring constant is . What should be the minimum amplitude of the motion so that the mass gets detached from the pan (take )?
(a)
(b) any value less than
(c)
(d)
[2007]
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Answer:
Correct Answer: 48. (a)
Solution:
- (a) Mass gets detached at the upper extreme position when pan returns to its mean position.
At that point,
i.e.