If multiple forces are exerted on an object, then one can calculate the net force on the object (the vector sum of the forces), and the net work done on the object will be equal to the work done by th...If multiple forces are exerted on an object, then one can calculate the net force on the object (the vector sum of the forces), and the net work done on the object will be equal to the work done by the net force: \begin{align*} W &= \vec F \cdot \vec d = Fd\cos\theta\\[4pt] W &= F_xd_x+F_yd_y+F_zd_z\\[4pt] W &=\int_A^B \vec F(\vec r) \cdot d\vec l\\[4pt] W^{net} &= \int_A^B \vec F^{net}(\vec r) \cdot d\vec l \end{align*}
