roller skates
A lever is a device that uses a single moment to change the size or direction of a force. By applying a force at one point on the lever, a larger force can be exerted at a different point on the lever.
An electrical load.
load
load
A wind turbine is a device that uses the force of the wind to generate electricity. Wind turbines have blades that spin when the wind blows, turning a generator to produce electricity.
A heat engine that uses heat to do work
Work is done when a force is applied to an object and causes it to move. If a gardener uses 300 N of force to move an object, work is done only if the object moves in the direction of the force applied. The amount of work done would depend on the distance the object is moved. Work is calculated as force multiplied by distance in the direction of the force.
Effort Force
[Traditional] cameras.
A lever is a simple machine that changes the direction or magnitude of the force applied to it. It can be used to increase the motion or force output from the input work.
a heat pump that uses work to move heat
A lever is a device that helps reduce the force needed to do work by amplifying the input force. It consists of a rigid bar or beam that pivots at a fixed point, called a fulcrum. By adjusting the distance between the applied force and the fulcrum, a lever can increase the force output while reducing the force input needed.