mechanical advantage

Front

What is mechanical advantage?

Back

The amount by which a machine multiplies input force.

Front

What is the equation for mechanical advantage?

Back

MA = output force / input force

Front

What is the unit of measurement for work?

Back

Joules

Front

What does efficiency measure in a machine?

Back

The percentage of the input work that is converted to output work.

Front

How do simple machines affect work?

Back

They make work easier.

Front

What is the relationship between input force and output force in a machine?

Back

Mechanical advantage is the ratio of output force to input force.

Front

What is the formula for calculating efficiency?

Back

Efficiency = (output work / input work) x 100%.

Front

What is the role of friction in machines?

Back

Friction reduces efficiency by converting some input work into heat.

Front

What is a lever?

Back

A simple machine that consists of a rigid bar that pivots around a fulcrum.

Front

What is a pulley?

Back

A simple machine that uses a wheel and a rope to lift objects.