Simple Machines

Front

What is a simple machine?

Back

A simple machine is a device that makes work easier by allowing us to push or pull in a more efficient way. Examples include levers, pulleys, and inclined planes.

Front

What is work in physics?

Back

Work is done when a force is applied to an object and the object moves in the direction of the force. It is calculated as Work = Force x Distance.

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 a fulcrum. It is used to lift or move loads.

Front

What is a fulcrum?

Back

A fulcrum is the point on which a lever pivots. It is the support that allows the lever to lift or move an object.

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. It reduces the amount of force needed to lift an object.

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. When the wheel turns, the axle turns as well, making it easier to move objects.

Front

What is a wedge?

Back

A wedge is a simple machine that is used to split or cut objects. It has a thick end and a thin edge, allowing it to exert force on the material.

Front

What is a pulley?

Back

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

Front

How does a doorknob function as a wheel and axle?

Back

A doorknob functions as a wheel and axle because turning the knob (wheel) rotates the spindle (axle), allowing the door to open.

Front

What is the mechanical advantage of using simple machines?

Back

The mechanical advantage is the factor by which a machine multiplies the force put into it. Simple machines allow us to use less force to move heavier objects.