Calculate the work done when a force of 20N stretches a spring by 50mm.
A
0.5J
B
1.5J
C
2.0J
D
2.5J
Verified Correct Answer: A.
Physical Principles & Numerical Solution
W = \(\frac{1}{2}Fe\)
W = \(\frac{1}{2}\times 20 \times 0.05\)
W = 0.5J
Source: Myschool Past Questions Archive (Record #27319)