A force On particle is conservative if:________?
Correct answer: D. It work depends on the end points of every motion, not on the path between.
- A. It's works equals the change in the kinetic energy of the particle.
- B. It's obeys Newton's second law
- C. It's obeys Newton's third law
- D. It work depends on the end points of every motion, not on the path between.
Explanation
A conservative force does work that depends only on the initial and final positions, not on the path taken between them. This also allows the work around a closed path to be zero. The likely choice is a, because the work-energy theorem says net work changes kinetic energy for any force, not that this property defines a conservative force.
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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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