A spring having spring constant of 10 N/m2 is stretched to 5 m, what will be the work done?
Correct answer: D. 125 J
- A. 250 J
- B. 50 J
- C. -250 J
- D. 125 J
Explanation
The energy stored in the spring is given by? E = 1/2 kx2. E = ½ (10)(5)2 . E = "125J".
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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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