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 of direction of force, enabling a load to be lifted using less force.

Front

What are the main uses of pulleys?

Back

Pulleys are used to lift heavy objects, change the direction of force, and reduce the amount of force needed to lift a load.

Front

How does a pulley system reduce the effort needed to lift a load?

Back

A pulley system reduces effort by distributing the weight of the load across multiple ropes or pulleys, allowing a smaller force to lift the load.

Front

What is the mechanical advantage of a pulley?

Back

The mechanical advantage of a pulley is the ratio of the load force to the effort force, indicating how much the pulley system amplifies the input force.

Front

What is a fixed pulley?

Back

A fixed pulley is a pulley that is anchored in place and does not move with the load; it changes the direction of the force applied.

Front

What is a movable pulley?

Back

A movable pulley is a pulley that moves with the load, allowing for a reduction in the amount of force needed to lift the load.

Front

What is a compound pulley system?

Back

A compound pulley system combines fixed and movable pulleys to further reduce the effort needed to lift a load.

Front

What is the role of friction in pulley systems?

Back

Friction in pulley systems can reduce efficiency by requiring more force to lift the load than theoretically calculated.

Front

What is the formula for calculating mechanical advantage in a pulley system?

Back

The mechanical advantage (MA) can be calculated using the formula MA = Load Force / Effort Force.

Front

What is the significance of the load in a pulley system?

Back

The load is the weight or force that needs to be lifted, and understanding its magnitude is crucial for determining the required effort.