Mechanical advantage refers to the ratio of input and output forces in a mechanical system. It can be used to describe the efficiency and working ability of a mechanical system. Mechanical advantage is calculated by the ratio of input force to output force. In a simple mechanical system, mechanical advantages can be changed through different components. For example, slopes, pulleys, levers, etc. can increase or decrease mechanical advantages.

Mechanical advantage refers to the ratio of input and output forces in a mechanical system. It can be used to describe the efficiency and working ability of a mechanical system. Mechanical advantage is calculated by the ratio of input force to output force. In a simple mechanical system, mechanical advantages can be changed through different components. For example, slopes, pulleys, levers, etc. can increase or decrease mechanical advantages.