 OT - HP question., HP equation. |
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| Jeff Krieger |
 May 23 2003, 11:33 AM
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#1
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If you apply a force of F lbs tangentially to, say, a flywheel's radius of R feet to produce a torque of F*R ft*lbs and causing the flywheel to rotate, would the power you apply be given by (F lbs)*(2*pi*R ft.)*(R.P.M.) ?
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| madd_dogg_914 |
May 23 2003, 01:16 PM
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#2
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Member  Group: Members Posts: 478 Joined: 30-March 03 From: Vacaville, CA Member No.: 497 Region Association: Northern California |
Depends on hom much boost you are running . . . oh wait, you can't turbo a 914! MWUHAHAHAHAHAHAHA
Actually I think that you need to factor in the flux capacitor somewhere in that equation. Then divide by 2A Actually I have no idea what I am talking about, but I am sure someone will chime in who does. -Chris |
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| Aaron Cox |
May 23 2003, 06:18 PM
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#3
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
sorry....just got out of physics class.....hmmm hold on..ill dig thru this one!
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| Jeff Krieger |
May 23 2003, 06:20 PM
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#4
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Hey, I've got the Halliday and Resnick physics text too! Unfortunately, I've forgotten most of it.
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| Aaron Cox |
May 23 2003, 06:22 PM
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#5
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
it is my dads! his old college physics book! HP is on page 145 fyi ok? (IMG:style_emoticons/default/wink.gif)
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| Jeff Krieger |
May 25 2003, 11:41 AM
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#6
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I think I've figured it out. My equation above can be rewritten as (F*R)(lbs*ft)(2*pi)(RPM) or (torque)*(2pi)*(RPM) and since 1 hp =33000 lbs*ft/min we have hp = [(F*R)(lbs*ft)(2*pi)(RPM)] * [1hp/33000lbs*ft/min] = (F*R)*(RPM)/5252.1 = (torque)*(RPM)/5252.1 which is the well known equation for finding hp when the torque and RPM are known.
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| Aaron Cox |
May 25 2003, 11:43 AM
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#7
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
and we care because???? (IMG:style_emoticons/default/laugh.gif)
just kidding! at least your noggin is working unlike me (IMG:style_emoticons/default/wacko.gif) (IMG:style_emoticons/default/blink.gif) |
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| Jeff Krieger |
May 25 2003, 12:04 PM
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#8
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QUOTE(acox914 @ May 25 2003, 10:43 AM) and we care because???? (IMG:style_emoticons/default/laugh.gif) just kidding! at least your noggin is working unlike me (IMG:style_emoticons/default/wacko.gif) (IMG:style_emoticons/default/blink.gif) Just talking to myself. Actually, I'm just glad that I didn't have to review line integrals to figure it out. |
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