Mechanical Advantage and Efficiency

Front

What is Mechanical Advantage?

Back

Mechanical Advantage (MA) is the ratio of the output force produced by a machine to the input force applied to it. It measures how much a machine multiplies force.

Front

How is Mechanical Advantage calculated for a wedge?

Back

Mechanical Advantage of a wedge is calculated by dividing the length of the slope by the width of the wedge.

Front

What is the formula for calculating Mechanical Advantage of a lever?

Back

Mechanical Advantage of a lever is calculated by dividing the length of the input arm by the length of the output arm.

Front

What is the Mechanical Advantage of a pulley?

Back

Mechanical Advantage of a pulley is calculated by dividing the output force by the input force.

Front

What is Efficiency in the context of machines?

Back

Efficiency is a measure of how well a machine converts input energy into useful output energy, expressed as a percentage.

Front

How is Efficiency calculated?

Back

Efficiency is calculated by dividing the work output by the work input and multiplying by 100.

Front

What is the Efficiency of a machine with 40 joules input and 35 joules output?

Back

Efficiency = (35 J / 40 J) * 100 = 87.5%.

Front

What does a Mechanical Advantage greater than 1 indicate?

Back

A Mechanical Advantage greater than 1 indicates that the machine multiplies the input force, making it easier to perform work.

Front

What does a Mechanical Advantage less than 1 indicate?

Back

A Mechanical Advantage less than 1 indicates that the machine requires more input force than the output force it provides.

Front

What is the significance of a wedge in mechanical systems?

Back

A wedge is used to separate or hold objects apart, converting a force applied to its wide end into a greater force at its narrow end.