Simple Machines: First Class Levers

An example of a lever is a ...

• pulley
• bicycle 
• scissors 
• screw 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

For a lever to be a first class lever the fulcrum needs to be ..

• between the load and the effort
• on one side and the load and effort on the other side 
• on the same side as the load arm. 

A force multiplier is a simple machine that multiplies your ...

• strength 
• effort 
• load 
• speed 

Tags

NGSS.MS-ETS1-2

A lever is used to raised a 12 kilograms mass with a effort that is only 4 kilograms. What is the mechanical advantage ? 

• 12
• 4
• 3
• 32

When you kick a ball the fulcrum is your ..

• foot
• ball 
• leg 
• knee

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When you rub two surfaces together it's called

• speed
• friction
• effort
• joules

Effort is

• An inclined plane wrapped around a rod
• A unit used for measuring force
• How far an object moves in a certain amount of time
• The force applied to a simple machine

Tags

NGSS.MS-ETS1-1

If the fulcrum is closer to the effort, it will take 

• more force to lift the load
• less force to lift the load
• equal force to the lift the load
• no force to life the load 

Tags

NGSS.MS-PS2-2

In a first class lever, the _____ is in the middle.

• Effort
• Fulcrum
• Load
• Machine

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following does a simple machine NOT do?

• Increase the force applied
• Increase the distance the force is applied over
• Change the direction the force is applied
• Change the amount of work that needs to be done