An object of mass 20.0 kg is lifted vertically through 1.00 m by a 400 N force. How much work is done by the net force in lifting this object? Use g = 10.0 m/s².

Question

Quizplus · Accepted Answer

Work done by a force = force x distance x cos(theta).

Here, the force and displacement are in the same direction, so cos(theta) = 1.

Work done = 400 N x 1.00 m = 400 J.

Note that the weight of the object does not need to be considered since it is not doing any work in this scenario.

An Object of Mass 20