Machines (Energy + Work)

Front

What is a lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum. It is used to lift or move loads with less effort.

Front

What is mechanical advantage?

Back

Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device, or machine system. It allows a smaller input force to lift a larger load.

Front

What type of simple machine is a see-saw?

Back

A see-saw is an example of a lever.

Front

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help raise or lower objects with less effort.

Front

What is the purpose of a pulley?

Back

A pulley is a simple machine that uses a wheel and a rope to lift or lower objects, reducing the amount of force needed to lift a load.

Front

What is a wedge?

Back

A wedge is a simple machine that consists of two inclined planes joined together, used to split, cut, or lift objects.

Front

What is a screw?

Back

A screw is a simple machine that consists of a spiral inclined plane wrapped around a cylinder, used to hold objects together or lift materials.

Front

What is a wheel and axle?

Back

A wheel and axle is a simple machine that consists of a larger wheel attached to a smaller axle, allowing for easier movement of loads.

Front

How does a lever work?

Back

A lever works by applying a force at one end of the bar, which pivots around the fulcrum, allowing a load to be lifted at the other end.

Front

What is the formula for mechanical advantage in levers?

Back

Mechanical Advantage (MA) = Length of Effort Arm / Length of Load Arm.