Torque

[applefiend95]

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

 

[ashleypenny]

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

Joe needs to do his own homework else the bolts will break!

 

[ideal.dreams]

1) Do your own homework, it'll benefit you later.
2) This is a forum for discussing iMacs, not Torque

 

[iohass]

the answer is potatoe

 

[jkautosports]

just use rf sin theta

 

[joe-h2o]

The answer is twice half as much.

 

[digitalfailure]

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

 

[mobilehaathi]

It is quite simple really, [redacted]. But you know, you really should learn to do your own homework.

 

[iJohnHenry]

It's patently obvious.

42.

 

[wordoflife]

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.

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