Why the gear drives said to be power transmitting device?While it transmitting motion only.

Answer Posted / palash

Transmitting motion in different rotational speed , changes
the transmission of torque from the driver to the driven
shaft using the same power input

As we know power p=2*pi*n*T/60 so if you change the n the
torque will automatically be changed.So Geared devices can
change the speed, torque, and direction of a power source.
That's why car changes the gear to get desire power at a
prticular elevation.

Correct me If you think otherwise.
Thanks..

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