BPSC – Combined Competitive Examination · Question 126
A pair of oxen exerts a force of 140 N on a plough. The field ploughed is 15 m long. How much work is done in ploughing the length of the field?
Show answer & explanation
Answer: (C) 2100 J
Explanation
Work = force × displacement = 140 N × 15 m = 2100 J.
- (A) Incorrect
Wrong: W = 140 × 15 = 2100 J.
- (B) Incorrect
Wrong: W = 140 × 15 = 2100 J.
- (C) Correct
Correct: W = F × s = 140 × 15 = 2100 J.
- (D) Incorrect
Wrong: W = 140 × 15 = 2100 J.