Exercise 1:
http://geargenerator.com/
Driving gear has 5 teeth and it's RPM (revolutions per minute/rotations per minute) should be 6, the driven gear's RPM should be 20, and the direction of the rotation should be the same as the driving gear.
Hint: (You may not always need this information)
The diametral pitch, P, is related to the number of teeth, N, and the pitch diameter, d, by the relation P=N/d.
Exercise 2: If the lineal gear at the top can not rotate, what will happen?
