Using Machines Flashcardizz

A compound machine is a device that combines two or more simple machines to perform a specific task. Example: Scissors, which use levers and wedges.

Input work refers to the work done on a machine, calculated as the force applied to the machine multiplied by the distance over which the force is applied.

Efficiency is calculated using the formula: (Output work / Input work) x 100.

The efficiency of an ideal machine is 100%, meaning all input work is converted to output work without any losses.

Output force is the force exerted by a machine to perform work, often greater than the input force due to mechanical advantage.

A simple machine is a basic mechanical device that changes the direction or magnitude of a force. Examples include levers, pulleys, and inclined planes.

Mechanical advantage is the ratio of output force to input force in a machine, indicating how much a machine multiplies force.

A lever is a simple machine consisting of a rigid bar that pivots around a fixed point called the fulcrum, used to lift or move loads.

A pulley is a simple machine that consists of a wheel on an axle or shaft, designed to support movement and change the direction of force.

A wedge is a simple machine that consists of two inclined planes joined together, used to separate or hold objects apart.