A force F = (0.5x + 10) N acts on a particle, calculate the work done by the force in displacing particle from x = 0 to x = 2 m.
Correct answer: B. 21 J
- A. 20 J
- B. 21 J
- C. 23 J
- D. 22 J
Explanation
Force is (0.5x + 10) which when multiplied by 2 gives us 21.
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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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