Front

What is a simple machine?

Back

A simple machine is a device that changes the direction or magnitude of a force, making work easier. Examples include levers, pulleys, and wedges.

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What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force produced by a machine to the input force applied. It indicates how much a machine multiplies force.

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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.

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

What is a wedge?

Back

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

Front

What is a screw?

Back

A screw is a simple machine that converts rotational motion into linear motion. It consists of a cylindrical shaft with a helical ridge.

Front

What is work in physics?

Back

Work is done when a force applied to an object causes it to move. It is calculated as the product of force and displacement in the direction of the force.

Front

What is the formula for calculating work?

Back

Work = Force x Displacement (W = F x d) where W is work, F is force, and d is displacement.

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What is the role of friction in simple machines?

Back

Friction is a force that opposes motion. It can reduce the efficiency of simple machines by requiring more input force to achieve the same output.

Front

What is an example of a compound machine?

Back

A bicycle is an example of a compound machine, as it combines multiple simple machines like levers (pedals) and wheels.