A band passes around all the wheels so that they can all be turned by the driving wheel. When the driving wheel turns in the direction shown, which way will the wheel B turn?
If we consider the string BAD, it shows that the wheel B should turn in the anti clockwise direction.
But when we consider the string DCEFGB, it shows the wheel should move in the clockwise direction. Since, both are contradictory, wheel B won't move.
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