Question

you are given a motor operated by a 9V battery. The stall torque for this motor is  T_s = 0.04 N-m, and its no-load speed, w_nl = 2200  rpm.

You are given a 10-tooth gear, a 20-tooth gear, and a bunch of axles (shafts).

Draw below how will you connect the gears and shafts so that output shaft has a higher torque than the motor shaft.
Label in your diagram, which gear is the input (driver), and which is the output (driven).   

What is the gear ratio in this case?   

If the motor shaft is spinning at 1100 rpm, what will be the speed (rpm) and the torque (Nm) of the output shaft?

Answer 1