Why the Differential gear is used? (2)

Fig.2 While taking a right turn the left wheel has to travel more distance; this means more speed to left wheel.

This means that the left wheel has to rotate at a higher speed compared to the right wheel. If these wheels were connected using a solid shaft, the wheels would have to slip to accomplish the turn. This is exactly where a differential comes in handy. The ingenious mechanism in a differential allows the left and right wheels to turn at different rpms, while transferring power to both wheels.