What is the formula for MA of a lever?

The mechanical advantage (MA) of a lever is calculated using the formula: MA = Length of effort arm / Length of resistance arm. The effort arm is the distance from the fulcrum to where the effort is applied, while the resistance arm is the distance from the fulcrum to the load being moved. This ratio indicates how much the lever amplifies the input force. A higher MA means the lever provides greater force amplification.