Question

Your manager asks you to work on the design of a 10-speed drilling machine which has a common
ratio of 1.38. The lowest speed is to be set at 200rev/min.
 Work out all the speeds.
 Plot them in a chart.
 Write down the general expression for the geometric progression (GP) which you have
used.
 If the design is changed to a 12 speed, calculate the highest speed using the GP formula.