Conversion in Auto Mechanics: cm-kg/min to ft-lbs/sec to hp

[Math You]

If anyone could help me I would greatly appreciate it. I have one question that just makes my head want to explode.

1 Horse power is 550 footpounds per second. How many horse power would it be if the power was 274, 050 centimeter kilograms per minute?

I don't know how to convert footpounds to centimeter kilograms, and I am not even sure if this is how you start to go about it lol.

I throw myself at your mercy!

If this is in the wrong forum I am sorry. I am new here and I didn't see a spot for conversions so I figured basic would be best for now.

Thanks!

 

[royhaas]

The "English" or "common" units are now defined in terms of the metric system. One inch = 2.54 cm, and one pound = 2.2 kg.

 

[Deleted member 4993]

If anyone could help me I would greatly appreciate it. I have one question that just makes my head want to explode.

1 Horse power is 550 footpounds per second. How many horse power would it be if the power was 274, 050 centimeter kilograms per minute?

I don't know how to convert footpounds to centimeter kilograms, and I am not even sure if this is how you start to go about it lol.

I throw myself at your mercy!

If this is in the wrong forum I am sorry. I am new here and I didn't see a spot for conversions so I figured basic would be best for now.

Thanks!

For conversion factors, go to:

http://www.simetric.co.uk/si_hij.htm

before getting next head-ache - learn to use google.

 

[Math You]

I should have clarified better. I do not know how to solve this. I have a conversion chart, but is it really solved by simply going from feet to inches to centimetres? Pounds to kilograms?

Then what do I do with the 274 050? I am just having trouble wrapping my head around it for some reason....


I need more help than just a conversion chart, that I have....

 

[Mrspi]

If anyone could help me I would greatly appreciate it. I have one question that just makes my head want to explode.

1 Horse power is 550 footpounds per second. How many horse power would it be if the power was 274, 050 centimeter kilograms per minute?

I don't know how to convert footpounds to centimeter kilograms, and I am not even sure if this is how you start to go about it lol.

I throw myself at your mercy!

If this is in the wrong forum I am sorry. I am new here and I didn't see a spot for conversions so I figured basic would be best for now.

Thanks!

247050 cm kg/min

1 cm = 2.54 in....

247050 cm kg/ min * (2.54 in/ 1 cm)

1 kg =2.2 lb.....

245050 cm kg/min * (2.54 in / 1 cm) *(2.2 lb / 1 kg)

1 min = 60 sec

245050 cm kg/min *( 2.54 in / 1 cm) * (2.2 lb / 1 kg) * (1 min / 60 sec)

Oh...and we need FEET in there, not inches.

12 inches = 1 foot

245050 cm kg/min * (2.54 in /1 cm) *( 2.2 lb/1 kg )* (1 min/60 sec) * (1 ft/12 in)

"cancel out" like units and do the arithmetic.

(245050 * 2.54 * 2.2 ) / (60 * 12) ft lb/ sec

That will give you the number of ft-lb / sec.

And, since 1 hp is 550 ft-lb/sec, you can take your answer from the previous step and divide it by 550 ft-lb/sec to get the number of horsepower.

 

[Math You]

If anyone could help me I would greatly appreciate it. I have one question that just makes my head want to explode.

1 Horse power is 550 footpounds per second. How many horse power would it be if the power was 274, 050 centimeter kilograms per minute?

I don't know how to convert footpounds to centimeter kilograms, and I am not even sure if this is how you start to go about it lol.

I throw myself at your mercy!

If this is in the wrong forum I am sorry. I am new here and I didn't see a spot for conversions so I figured basic would be best for now.

Thanks!

247050 cm kg/min

1 cm = 2.54 in....

247050 cm kg/ min * (2.54 in/ 1 cm)

1 kg =2.2 lb.....

245050 cm kg/min * (2.54 in / 1 cm) *(2.2 lb / 1 kg)

1 min = 60 sec

245050 cm kg/min *( 2.54 in / 1 cm) * (2.2 lb / 1 kg) * (1 min / 60 sec)

Oh...and we need FEET in there, not inches.

12 inches = 1 foot

245050 cm kg/min * (2.54 in /1 cm) *( 2.2 lb/1 kg )* (1 min/60 sec) * (1 ft/12 in)

"cancel out" like units and do the arithmetic.

(245050 * 2.54 * 2.2 ) / (60 * 12) ft lb/ sec

That will give you the number of ft-lb / sec.

And, since 1 hp is 550 ft-lb/sec, you can take your answer from the previous step and divide it by 550 ft-lb/sec to get the number of horsepower.

First off thanks so much!!!!

Secondly about the 3rd line you started using 245 050 instead of 247 050? Can I assume that was just a typo?


So I did the entire question going off 247 050 with your formula, and I ended up with foot pounds of 1917.3825, could you tell me if this is correct?

Lastly, our teacher usually asks for the first 2 decimal places when rounding off so I divded 1917.3825/550 and I got 3.49 HP any way you could tell me if this is correct?


Again thanks!

 

[Math You]

AH I just noticed something else! You used 247 050 instead of 274 050.


Again typo????? lol I am confused now.

 

[Mrspi]

AH I just noticed something else! You used 247 050 instead of 274 050.


Again typo????? lol I am confused now.

Yes...that was a typo, of course. I'm sorry for any confusion. But that does not affect the METHOD I showed you.

Replace my (incorrect) number of cm kg/sec with the correct number, 274 050.

Then, do the arithmetic.

If your arithmetic is done correctly, your answer should also be correct.

 

[Deleted member 4993]

I should have clarified better. I do not know how to solve this. I have a conversion chart, but is it really solved by simply going from feet to inches to centimetres? Pounds to kilograms? <<<Yes

Then what do I do with the 274 050? <<< What would you do if you were asked to convert 274,050 dollars to cents - knowing 1 dollar = 100 cents? Same process...

I am just having trouble wrapping my head around it for some reason....


I need more help than just a conversion chart, that I have....

 

[Math You]

Thanks for the help guys. I had a test today and I got 95% so I am happy with that.

I know it might seem rudimentary to you, but I haven't done this stuff in like 10 years and alot of it is the first time I have seen it.



Thanks again!