

Subject:
wheel diameter/speed question
Category: Reference, Education and News > Homework Help Asked by: biga626ga List Price: $2.00 
Posted:
23 Feb 2005 18:06 PST
Expires: 25 Mar 2005 18:06 PST Question ID: 479729 
If a car has wheels with a diameter of three feet. About how many miles per hour is the car going, if the wheels are turning at about 600 times per minute? 

Subject:
Re: wheel diameter/speed question
Answered By: markjga on 23 Feb 2005 18:50 PST 
biga626  The answer is approximately 64.26 miles per hour. The formula for solving the problem is found at this website: Math Forum http://mathforum.org/library/drmath/view/60367.html The formula described there for this problem is: (minutes in an hour) X (revolutions per minute) X (wheel diameter in inches) X (pi) DIVIDED BY (feet in a mile) times (inches in a foot) = (speed in miles per hour) Using the numbers you have stated, the problem then would be: 60 X 600 X 36 X 3.1416 DIVIDED BY 5280 X 12 The answer to that problem, as I stated above, is 64.26 mph Search Strategy: I found the formula with the following Google search: formula diameter wheel speed minute ://www.google.com/search?sourceid=navclient&ie=UTF8&rls=GGLD,GGLD:200401,GGLD:en&q=formula+diameter+wheel+speed+minute I urge you to visit the site linked above to get a fuller understanding of the problem and its solution. Other sites returned as "hits" with the Google search terms I used could also be helpful to you. markjga 

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