| View Poll Results: what sort of poll is this i dont know | |||
| yes |
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1 | 50.00% |
| no |
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1 | 50.00% |
| Voters: 2. You may not vote on this poll | |||
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Force required on Axel |
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| Apr1-04, 01:47 AM | #1 |
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Force required on Axel
Hello,
This will be a very simple questions for all you pro's out there. I want to know the amount of horsepowers required to start the rotation and maintain a rotation of 20 RPM of an axel which has an arm of 4 mts having a load of 100 kgs at the end of the arm. the dia of tha axel is 1000mm (10 Cm.) and the leangth of the arm as stated above is 4 meters. Please help |
| Apr1-04, 04:42 AM | #2 |
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Recognitions:
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Technically the answer is 0.
The only thing reason the system will need power to keep it going is because of friction, a variable you don't know. For a second I thought (mv^2)/r would have something to do with it but that force is exerted by the 4m bar and not a motor connected to a shaft. If you give a required torque specification for that given RPM, I can tell you how much power you need. btw, I voted no. |
| Apr1-04, 04:46 AM | #3 |
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The final speed isn't important - what you need to decide is the rate at which your device (which sounds more like a centrifuge than an axle) gets to that speed, i.e the (angular) acceleration. Once it's up to speed you just need to overcome friction losses, etc to keep it there.
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| Thread Closed |
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