Grade 12th passGeneral Physics
P=2piNT/60 but how Power inversly proportional to Torque
P=2piNT/60 but how Power inversly proportional to Torque
1 Answer
Vikas TU
Power is given as:
Power is an output of torque * speed [P=~(2*pi*n rpm*M Nm/9660)kW]
Torque is reaction to the load required to overcome the resistance to a shaft.
So for a constant power applied for a given time period (power*time =energy) .. say on drill bit / screw / motor shaft.... based on the varying load on the shaft , the torque demand also directly varies and assuming energy transfer has to remain constant (100% efficiency - value doesn't really matter in this case) n*M*t = energy; hence for a given time period and fixed energy n = k/M I.e., speed is inversely proportional to torque
Torque is reaction to the load required to overcome the resistance to a shaft.
So for a constant power applied for a given time period (power*time =energy) .. say on drill bit / screw / motor shaft.... based on the varying load on the shaft , the torque demand also directly varies and assuming energy transfer has to remain constant (100% efficiency - value doesn't really matter in this case) n*M*t = energy; hence for a given time period and fixed energy n = k/M I.e., speed is inversely proportional to torque
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