Pulleys

Front

What is a pulley?

Back

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

Front

What is mechanical advantage in the context of pulleys?

Back

Mechanical advantage is the ratio of the load force to the effort force in a pulley system, indicating how much a machine multiplies force.

Front

How do you calculate mechanical advantage for a pulley system?

Back

Mechanical advantage = Load Force / Effort Force.

Front

What is the formula to find the effort required to lift a load using a pulley?

Back

Effort = Load / Mechanical Advantage.

Front

If a pulley has a mechanical advantage of 2, what does this mean?

Back

It means that the effort required to lift the load is half the weight of the load.

Front

What is the effort required to lift a 650 newton load with a mechanical advantage of 2?

Back

325 newtons.

Front

If an effort of 450 newtons is applied to a pulley with a mechanical advantage of 2, what is the load that can be lifted?

Back

900 newtons.

Front

What is the mechanical advantage of a pulley system that allows a 300 newton load to be lifted with 50 newtons of effort?

Back

6.

Front

How does the number of pulleys in a system affect mechanical advantage?

Back

Increasing the number of pulleys generally increases the mechanical advantage, allowing heavier loads to be lifted with less effort.

Front

What is the relationship between load and effort in a pulley system?

Back

The relationship is defined by the mechanical advantage; as mechanical advantage increases, the effort required to lift a given load decreases.