Take out Lever Activity (page 17) or get one off of the front table.

Today- Follow directions on Lever activity to the best of your ability.

You do not need teacher signature when it asks for it.

Read this and understand you must start with the Blue because it is more accurate when the force is less than 2.5 n

You do not need teacher initials when it asks for them

Setup-

Measure and secure fulcrum 15cm from edge of table…

Part 1- First class levers

Fulcrum at 70 & 100cm edge over table

Weight at 2cm

Apply effort force like this

70cm

100cm

2cm

Apply force down

Put the top handle around the meter stick

and pull down with the hook

Make sure fulcrum does not hit table and only balances on table

Part 2- Second class levers

100cm

Binder Clip 1cm end

Apply force up

Move weight according to directions

“Fulcrum in the middle”

Part 3- Third class levers

100cm

Binder Clip

Weight at 1 cm

Apply force up

Move Binder Clip according to directions

“Effort in the middle”

Read this and understand you must start with the Blue because it is more accurate

Read this and understand you must start with the Blue because it is more accurate