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Per NCERT §5.5, the work done by a VARIABLE force F(x) over displacement from x_i to x_f is which?
A∫ F(x) dx from x_i to x_f
BArea only of triangle
CF(x_f) × x_f − F(x_i) × x_i
DF(x_f) − F(x_i)
Answer & Solution
Correct answer: A. ∫ F(x) dx from x_i to x_f
NCERT §5.5: W = ∫ F(x) dx. Area under the F vs x curve.
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