1. Machines

2. Simple Machines  Work out is less than or equal to Work in.  Force out can be greater than Force in.

3. Mechanical Advantage MA = F in F out

4. Efficiency Eff = 100 x W out W in

5. Ideal Machines W in = W out F in d in = F out d out

6. Simple Machines There are three types of simple machines we will discuss in this class: Pulley Inclined Plane Lever

7. Pulley

8. Pulley Ideal MA

9. Inclined Plane An inclined plane is a ramp.

10. Work out for inclined plane W out = F out x Height Height

11. Work in for an inclined plane Length W in = F in x Length

12. Lever Fulcrum

13. Work in for lever Distance W in = F in x d in

14. Work out for lever Distance W out = F out x d out