Torque

Discussion in 'Community Discussion' started by applefiend95, Dec 9, 2012.

  1. macrumors regular

    Joined:
    Jan 25, 2012
    #1
    I know this is totally irrelevant but i figured one you people may be good at this:

    Joe is using a torque wrench to tighten the head bolts his monster truck. The required torque is 80 foot-pounds. The wrench handle is 18” long. How much force does Joe have to apply to properly tighten the bolts? While he tightening, his wrench measures 29 foot-pounds at a particular point. He turns the bolt farther exactly 45 degrees. The measured torque is now 50 ft.-lbs. He turns the bolt farther exactly another 45 degrees. The measured torque is now 69 ft.-lbs. Predict how many more centimeters he must move the wrench handle to reach 80 foot-pounds of torque. Predict the torque at which the bolt will begin to break.

    the final torque they need to have is 11 => 80-69=11
    help please. thanks in advance
     
  2. macrumors member

    Joined:
    Dec 8, 2012
    #2
    Joe needs to do his own homework else the bolts will break!
     
  3. macrumors 68000

    ideal.dreams

    Joined:
    Jul 19, 2010
    Location:
    OH
    #3
    1) Do your own homework, it'll benefit you later.
    2) This is a forum for discussing iMacs, not Torque
     
  4. macrumors regular

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    Mar 11, 2012
    Location:
    Canada
  5. macrumors regular

    Joined:
    Dec 6, 2012
    Location:
    New York, NY
  6. macrumors 6502a

    Joined:
    Jun 24, 2012
  7. macrumors regular

    Joined:
    Sep 24, 2012
    #7
    Joe should have used a snap on tech-angle torque wrench and then he could have watched the torque applied reading rise and see the torque applied for a given angle of rotation on a lovely LCD display. That way he'd get the head tightened down a damn site quicker

    ;)
     
  8. macrumors 603

    mobilehaathi

    Joined:
    Aug 19, 2008
    Location:
    The Anthropocene
    #8
    It is quite simple really, [redacted]. But you know, you really should learn to do your own homework.
     
  9. macrumors P6

    iJohnHenry

    Joined:
    Mar 22, 2008
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    On tenterhooks
  10. wordoflife, Dec 9, 2012
    Last edited: Dec 9, 2012

    macrumors 604

    wordoflife

    Joined:
    Jul 6, 2009
    #10
    for the unlined part, could you just use t=rf, so 80=1.5f, so f = 53.3 of force. 1.5 is from the 18 inches, convert your units.

    for the bold part, wouldn't it be just anything over 80 ft/lb?

    and the middle part 11 = 1.5f so the force is 7.3 (not sure about unit for this, I normally use newtons because i use SI units). Now how to get the centimeters from that force, not sure. might give you an idea though.

    also, this could be totally wrong lol
     

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