Work Done by a Variable Force
A variable force, given by the equation F(x) = 3x² N, acts on a particle as it moves from position x = 1 m to x = 3 m. Compared to the work done by a constant force of 3 N over the same displacement, the work done by the variable force is:
A
3 times greater
B
9 times greater
C
4 times greater
D
8 times greater
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