Take the 2-minute tour ×
Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free, no registration required.

For my homework in engineering, I was given a question like this: There is an axle attached to a gear, which is meshed with another gear, which has an axle attached to it. I am given the diameter of both gears, and the torque on the input axle. How would I go about finding the torque on the output axle? I'm ommitting the specific numbers, because I would like to know how to solve such a problem in general. What is the relation between thetorque of the wheel and the torque of the axle? Is this even solveable without axle diameters? We went over the problem in class, but I can't for the life of me remember what we did. Thanks

share|improve this question
add comment

1 Answer

up vote 0 down vote accepted

Presumably each axle is rigidly attached to its gear (no bending or breaking). This means that the torque on the gear is the same as the torque on its axle. So you can ignore the axles and just think about the gears themselves. And in that case, you can just use the torque ratio of the gears themselves.

share|improve this answer
    
OK, so if the attachment is rigid, the torque will be the same for the wheel/gear & axle? –  Vishnu Jun 5 '13 at 21:26
    
Yep. If they're slipping, then all bets are off. But generally you assume they're rigid. –  Mike Jun 5 '13 at 22:12
    
Thanks, that makes sense now. –  Vishnu Jun 6 '13 at 8:36
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.