Simple Machines and Levers

A see saw is an example of a:

• 1st class lever

• 2nd class lever

• 3rd class lever

Which class of levers is the crowbar arrangement below?

• 1^st

• 2^nd

• 3^rd

• None of the above

Tags

NGSS.MS-PS2-2

What type of lever

• First Class Lever

• Second Class Lever

• Third Class Lever

This is the claw hammer. What class of lever is it?

• 1^st

• 2^nd

• 3^rd

• 1^st and 2^nd

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. 

What is the fixed point where a lever turns or pivots?

• load

• work

• fulcrum

• screw

This baseball BAT is demonstrating which type of lever at the shoulder?

• 1st class

• 2nd class

• 3rd class

• 4th class

Tags

NGSS.MS-PS2-1

Which of these is in the middle for a sugar tong?

• Load

• effort

• fulcrum

• none of the above

How many classes of levers are there?

• 1

• 2

• 3

• 4

This object is a lever class number ...

• 1

• 2

• 3

• No. It is not a lever.