A force F = x + 2 is applied on a body. What is the work done in displacing the body from x = 1 to x = 3?
Q1. A force F = x + 2 is applied on a body. What is the work done in displacing the body from x = 1 to x = 3?
Answer: 8 J
Explanation: Work done = ∫F dx from 1 to 3 = ∫(x + 2) dx = [x²/2 + 2x] from 1 to 3 = (9/2 + 6) - (1/2 + 2) = 8 J.