Simple Machines

25 points

1.    Name the six simple machines and give an example of the use of each.    (6 points)

2.    Draw lever diagrams for the three types of lever systems, and give an example of the

       use of each system.    (6 points)

3.    Draw a pulley system with a mechanical advantage of 3.  (1 point)

4.    Compute the mechanical advantage of a crowbar when 10 N of effort force lifts a resistance of 500 N. (2 points)

5.    Compute the efficiency of a machine that uses 20 N of effort force to move 30 N of resistance force (2 points)

6.    Compute the mechanical advantage of each machine below.    Show your work, with formulas.  (2 points each)