A spring with constant k = 200 N/m is compressed by 0.1 m. What is the potential energy stored?
Correct answer: B. 1.0 J
- A. 0.5 J
- B. 1.0 J
- C. 2.0 J
- D. 4.0 J
Explanation
Spring potential energy = ½kx² = ½ × 200 × (0.1)² = ½ × 200 × 0.01 = 1.0 J.
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Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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