What is the formula used to find mechanical advantage?

The formula used to find mechanical advantage is the output force divided by the input force. This ratio signifies how much a machine amplifies the input force to produce a greater output force. A mechanical advantage greater than one indicates that the machine can output more force than is put into it, which is the fundamental purpose of using machines — to make work easier.

For example, in systems like levers, pulleys, or ramps, knowing the relationship between input and output forces helps to determine how effectively the machine performs. If the output force is larger than the input force, it shows that the machine is effectively multiplying the effort applied, exemplifying the principle behind mechanical advantage in simple machines.