Question #119183

An electric motor develops 5.0-kW at 2000 rpm.The motor delivers its power through a spur gear 20-cm in diameter.If two teeth of the gear system to torque to another gear at the same instant, find the force exerted by each gear tooth.


1
Expert's answer
2020-06-01T14:27:17-0400

Power (P)(P) , Speed rpm (N)(N) , Torque (T)(T)


p=2πNT60p = \frac {2\pi NT}{60}


T=5000×602π×2000T = \frac{5000 \times 60}{2\pi\times2000}


T=23.87NmT = 23.87 Nm


the force exerted by each gear tooth (F)(F)


Diameter (D)=20cm=0.2m(D) = 20 cm = 0.2 m


T=F×D2T = F \times \frac{D}{2}


F=23.87×20.2=238.7NF = \frac{23.87 \times 2}{0.2} = 238.7N



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