Levers and Pulleys

Pulleys make work:

• Easier

• Rigorous

Tags

NGSS.3-5-ETS1-1

Identify the type of pulley

• fixed

• moveable

• block and tackle or pulley system

Identify the type of pulley

• Fixed

• Moveable

• Block and Tackle or pulley system

Tags

NGSS.MS-ETS1-2

A fixed pulley does not reduce the force needed to lift an object. What, then, is the advantage of using a fixed pulley?

• A fixed pulley reduces the force.

• A fixed pulley changes the direction of the force.

• A fixed pulley does not have any advantages.

In a simple machine, what is the load?

• point where the lever arm pivots

• the force needed to move the load

• the mass lifted by a system

• the distance the load travels

In a simple machine, what is the effort?

• the force needed to move the load

• the distance the load travels

• the mass lifted by a system

• the object being moved

What kind of advantage does a moveable pulley provide to lift a 100-lb hay bale?

• It will reduce the effort needed to lift the hay bale

• It will increase the mass of the hay bale

• It will provide no advantage

• It will decrease the distance the hay bale will travel

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

any of the six basic devices that provide mechanical or other advantage, such as pulleys and levers

• effort

• lever

• load

• simple machine

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The force applied to a lever in order to move a load.

• Newton

• Effort

• Fulcrum

• Load

The point at which a lever arm pivots.

• Lever

• Load

• Effort

• Fulcrum