shaft that rotates a wheel

[chandran]

there is a wheel. A shaft which rotates about a pivot point a is connected to the wheel
at the point b. what is the influence of the distance a to b in the torque applied to the wheel . the wheel just rests on the shaft at point a and it is not welded to the shaft.

[sp1408]

Didnt get your question,how exactly are you applying the torque?