1. POE Simple Machine Investigation
8/23/2016

2. First Class Lever
Pt 1 move fulcrum to hole 13, counter weight to hole 25, your hand at hole 1
Have each team member lift counter weight
Pt 2 move fulcrum to hole 8, counter weight to hole 25, your hand at hole 1
Pt 3 move fulcrum to hole 19, counter weight to hole 25, your hand at hole 1

3. 1st class lever cont.
Which lever required less force to lift the counter weight?
Why?
Calculate the IMA of each 1st class lever.

4. Second class lever
Move fulcrum to hole 2, counter weight to hole 16 and your hand at hole 25
Have each team member lift the counter weight
How is a second class lever different from a first class lever/
Calculate the IMA of the second class lever.

5. Third Class Lever
Move fulcrum to hole 2, counter weight to hole 25 and your hand at hole 9
What makes this lever different from the others?
Calculate the IMA.
Out of all three levers which do you prefer? Why?

6. Wheel and Axle
Pt 1 Using a string attach the weight to the axle, use your fingers to turn the wheel
Each team member takes a turn turning the wheel
Pt 2 using the string attach the weight to the wheel, use your fingers to turn the axle
Calculate the IMA for both systems

7. Pulleys
Use the system to create the fixed pulley, moveable pulley, and the block and tackle.
Have each team member pull the string for each pulley system
Which pulley system required less effort? Why?
Calculate the IMA for each pulley system.

8. Inclined plane
Using the string to pull the weight up the incline plane
Each team member takes a turn pulling the weight
Measure the length of the plane and the height, Calculate the IMA

9. Screw Do you think a screw is efficient?
Calculate the IMA of the screw