Machines and their Mechanisms

What is the difference between a simple machine and a complex machine?

• Harder math questions

• A complex machine is made of 2 or more simple machines

• A simple machine is made of 2 or more complex machines

• The amount of money you put in the machine

What does a mechanism NOT do?

• Change direction an object moves

• Increases the speed of an object

• Reduces the amount of force used to move an object

• Increases the value of an object

A​​ (a)   is a special kind of wheel system.

• pulley
• wheel
• gear
• load
• groove

Tags

NGSS.MS-PS2-1

A pulley’s wheel has a ​ (a)   , so that the rope can fit inside.

• groove
• pulley
• load
• gear
• pulled

The ​ (a)   is something that is being lifted or carried

• load
• pulley
• gear
• pulled
• groove

One end of the rope is attached to the load. The other end of the

rope is ​ (a)   .

• pulled
• pulley
• gear
• lifted
• load
• groove

What type of machine is a pulley?

• Lever

• Wheel and Axel

• Inclined Plane

• Screw

What is not an example of a pulley and gear

• clothesline

• flagpole

• elevator

• drill

What type of pulley system is this?

• Movable pulley

• Fixed pulley

• Compound pulley

• Block and tackle

What type of pulley system is this?

• Movable pulley

• Fixed pulley

• Compound pulley

• Block and tackle