A particle moves from A(1, 2, 3) to B(4, -2, 5) under a constant force whose Cartesian components are F = (2, -3, 4) N. Work done by the force is:
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Question

A particle moves from A(1, 2, 3) to B(4, −2, 5) under a constant force whose Cartesian components are F = (2, −3, 4) N. Work done by the force is:

G1 Physics · Accepted Answer

Displacement Δr = (3, −4, 2) m. For a constant force, W = F·Δr = 2(3) + (−3)(−4) + 4(2) = 26 J.