Pulley

A load of 650 newtons is lifted with this pulley. What is the effort required to do this work?

• 300

• 325

• 600

• 650

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The picture shows a 150 N load being lifted using a fixed pulley. Which force could lift the load?

• 50 N

• 75 N

• 175 N

Tags

NGSS.MS-PS2-2

How much force would be needed to lift the 150 N weight? Remember, you need to divide the original force by the number of pulleys.

• 300 N

• 150 N

• 75 N

• 25 N

Tags

NGSS.MS-PS2-2

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.

Identify the type of pulley

• Fixed

• Moveable

• Block and Tackle or pulley system

Identify the type of pulley

• Pulley System

• Fixed

• Moveable

In which situation will the pulley reduce the force needed to lift the load?

• A

• B

• C

• D

Tags

NGSS.MS-ETS1-1

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

Which of the following is not a characteristic of a pulley?

• Groovy Wheel

• Ideal

• Frame/block

• inclination

What is a pulley?

• a simple lifting machine consisting of a rope which unwinds from a wheel on to a cylindrical drum or shaft joined to the wheel to provide mechanical advantage.

• a rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other.

• a wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used (typically in combination) to raise heavy weights.

• a piece of wood, metal, or some other material having one thick end and tapering to a thin edge, that is driven between two objects or parts of an object to secure or separate them.