The area under a curved force and displacement graph shows:
Correct answer: B. Work under a variable force
- A. Work under a constant force
- B. Work under a variable force
- C. Work under a maximum force
- D. Work under a minimum force
Explanation
The curved nature of the graph shows that the force is changing and is not a straight, horizontal, constant line; hence, it represents work under a variable/changing force.
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About Work and Energy
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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