Lever

A simple machine that consists a rigid bar that pivots on a fixed point

• lever

• pulley

• wheel and axle

• fulcrum

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is a lever?

• •a moveable bar that cannot move around a fixed point, called a fulcrum.

• •a rigid bar that is free to move around a fixed point, called a fulcrum.

• •a moveable bar that is free to move around a fixed point, called a fulcrum

• •a rigid bar that cannot move around a fixed point, called a fulcrum

Tags

NGSS.MS-ETS1-1

The place where a lever pivots is called the _______.

• Load

• Force/Effort

• Fulcrum

• Rigid Bar

Which type of lever is this?

• First Class Lever

• Second Class Lever

• Third Class Lever

• Coach  Class Lever

Tags

NGSS.MS-PS2-2

What class lever is a nutcracker?

• 1st

• 2nd

• 3rd

A see saw is an example of a:

• 1st class lever

• 2nd class lever

• 3rd class lever

A wheelbarrow is an example of a:

• 1st class lever

• 2nd class lever

• 3rd class lever

Levers make work ________.

• Harder

• Easier

• Alright

• OK

WHAT ARE THE 3 MAIN PARTS OF A LEVER?

• FOOT, EFFORT, REPORT

• FULCRUM, STRUCTURE, EFFORT

• FULCRUM, EFFORT, LOAD

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.