The F-d graph for an object is a straight line with positive slope. If the height and width of the graph are 4 units and 2 units respectively, the work done on the object is:
Correct answer: B. 4 units
- A. Zero
- B. 4 units
- C. 8 units
- D. 2 units
Explanation
Work done = Area under F-d graph =1/2 (2)(4) = 4 units
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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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