STANDARD Physics Conservation of Energy MCQ Question
A block of mass 2 kg is dropped from a height of 40 cm on a spring whose force-constant is 1960 N m⁻¹. The maximum distance through which the spring is compressed by
5 cm
15 cm
20 cm
10 cm
Correct Answer
Detailed Explanation
The decrease in gravitational potential energy equals the increase in elastic potential energy. Using the equation mg(h + x) = ½kx², and solving for x, we find x = 0.1 m or 10 cm.
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