Question

A machine is used with a pulley system to lift a 1,295N weight a distance of 0.975m. If the machine pulls the rope a distance of 3.85m, applying a force of 395N, find the following:

The efficiency of the system ______ (sig figs matter)

Answer 1

$$\eta=\frac{(1295)(0.975)}{(395)(3.85)}=0.830$$