Classes of Levers

What class of lever is a pair of pilers?

• First class lever

• Second class lever

• Third class lever

What class of lever is a car door?

• First class lever

• Second class lever

• Third class lever

What class of lever is a seesaw?

• First class lever

• Second class lever

• Third class lever

What class lever is a wheelbarrow?

• First class lever

• Second class lever

• Third class lever

What class of lever is a fishing rod?

• First class lever

• Second class lever

• Third class lever

What class of lever is a pair of tweezers?

• First class lever

• Second class lever

• Third class lever

Tags

NGSS.MS-PS2-2

What class of lever is a stapler?

• First class lever

• Second class lever

• Third class lever

Tags

NGSS.MS-PS2-2

What class of lever is a rake?

• First class lever

• Second class lever

• Third class lever

Tags

NGSS.MS-PS2-2

Suzy finds that a lot of effort is needed to lift the load in the above diagram. How can Suzy use less effort to lift up the load?

• Use her leg to press.

• Move the position of the fulcrum perpendicular to the effort

• Move the fulcrum behind the load

• Move the fulcrum nearer to the load

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-PS2-4

The diagram shows a simple machine used to open the lid of a can. Which of the following situations uses the same principle as lifting up the lid of a can?

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Tags

NGSS.MS-PS2-1