_ work on arbitrary system means a transfer of energy to the system.
Correct answer: A. Positive
- A. Positive
- B. Negative
- C. Can be positive or negative
- D. None of these options are correct
Explanation
If a system is gaining energy / transfer of energy to the system occurs, then the work done on the system is said to be positive. Hence, Option A is correct.
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About Work
Work is done when a force produces displacement, with its value determined by the component of force along the displacement. The topic covers positive, negative and zero work, work by variable forces from force-displacement graphs, and the connection between net work and change in kinetic energy.
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