Pulleys and Inclined Planes

What are two types of pulleys?

• wings, fries

• load. weight

• fixed, movable

• effort, force

How do fixed pulleys make work easier?

• they change the direction of a force

• they change the amount of force required

• the distance over which the force is applied

• the measurement of an object

Identify the type of pulley

• fixed

• moveable

• block and tackle or pulley system

Tags

NGSS.MS-PS2-2

Identify the type of pulley

• Fixed

• Moveable

• Block and Tackle or pulley system

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the ideal mechanical advantage (IMA) of this pulley?

• .5

• 1

• 1.5

• 2

What is the ideal mechanical advantage of this pulley?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-ETS1-1

What is the ideal mechanical advantage of this pulley?

• 3

• 4

• 5

• 6

Tags

NGSS.MS-ETS1-1

The more supporting strings a pulley system has, the less efficient it is because ___________________.

• there is more friction

• its harder to lift the load

• there is more weight

• you are changing the direction of the force

An inclined plane reduces the amount of force needed to move an object by - 

• increasing the distance the object moves.
• transferring more of the force to the object
• reversing the direction the object is moved.

What is the Mechanical Advantage of this machine?

• 48

• 4

• 12

• 3

Tags

NGSS.MS-ETS1-1