It's late and i can't get my head round it, i need to find the time it takes for a wheel to complete 1 full revolution for any given speed.
Thanks in advance?
2007-07-23 10:35:35 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
ok lets say for example circumfrence(sp?) of 2000mm and 100 mph, what is the TIME taken for 1 revolution, must be as accurate as possible so i can reverse engineer it in the morning lol
2007-07-23 10:49:32 · update #1
There is 1609344mm in a mile
2007-07-23 10:51:55 · update #2
you need to specify the height of the wheel... its called the diameter, very important part of the equation .. sorry
Boo Hiss - at all the sad tw**s that have added to their answer - who gives a stuff at Pythagorus's subjective theory of relativity of the mass of a travelling object over speed?....
who needs the points? I gained 2 from answering
sheeeeesh!!!!!!!!!
2007-07-23 10:39:23 · answer #1 · answered by ~Mustaffa~Laff~ 4 · 0⤊ 1⤋
Get a tape measure and measure the circumference of the tyre in inches (e.g. 75 inches). 1 mile = 63 360 inch, so divide 63360 by the circumference of the tyre. 63 360/75=844.8. So the tyre would make 844 complete revolutions in 1 mile. The speed doesn't really matter except that at higher speed centrifugal force increases the circumference of the tyre slightly and hence slightly fewer revolutions of the tyre would be required to cover the distance.
2016-05-21 04:23:46 · answer #2 · answered by janetta 3 · 0⤊ 0⤋
The speed of a wheel is given in rpm or revolutions per minute. You want minutes per revolution, so just put 1 over the rpm figure, and that's your answer. However, if you want the answer in seconds, put 60 over the rpm figure, and simplify. Example: Speed = 420rpm. Time for one revolution = 1/420 minute, or 60/420 second. The second fraction can be reduced to 1/7 second.
2007-07-23 10:41:58 · answer #3 · answered by TitoBob 7 · 0⤊ 0⤋
ok...is the circumference or radius of the wheel defined in the problem?
If so, take the speed, it specifies a distance and a time, so for any given time the wheel travels a set distance, so take the circumference and divide it by the distance, that gives you the number of revolutions of the wheel for that distance and time. Now, taking that figure, you use fractions to figure out that if the speed was in MPH, and you need to know the answer it takes for one revolution, you divive the time by the revolutions and it gives you the time taken for one rev. easy?
2007-07-23 10:39:55 · answer #4 · answered by Danny N 4 · 0⤊ 0⤋
D divide S
where D equals the distance of the circumference of the wheel and S equals the speed that the wheel is travelling.
e.g. the circumference of a wheel is 1metre and the speed the wheel is travelling is 50cm a second then the time taken for the wheel to complete one revolution is:
1metre (100cm) divide 50cm = 2seconds
so it takes 2 seconds to complete one revolution
2007-07-23 11:01:01 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Depends on the size of wheel. `Gis a clue. If the circumference of a wheel is 12 ft, then for every revolution the wheel covers 12 ft. Now all you have to do is make a few calculations.
2007-07-23 10:54:43 · answer #6 · answered by Spanner 6 · 0⤊ 0⤋
By speed you could be referring to rotational speed i.e.revs per min. RPM:
In this case there is nothing to calculate so I guess you mean speed as in forward speed of a vehicle. So you need to work out the circumference of the wheel if this is not already given (say this is in metres). Now divide the speed (say this is in metres per second) into the circumference. You now have the answer in seconds.
You can work in feet and minutes or whatever units you like.
2007-07-23 10:50:12 · answer #7 · answered by Anonymous · 0⤊ 0⤋
If you have an angular velocity expressed in revolutions per unit of time, you simply need to divide 1 revolution by this angular velocity to get an amount of time for that revolution. If the angular velocity is expressed in radians per unit of time, instead divide 2*pi radians by the angular velocity, since 2*pi radians is a revolution.
If you instead have a linear velocity for a point at the edge of the wheel, you would also need to know the diameter of the wheel. The circumference is diameter*pi, and you would have to divide the circumference by the linear velocity to determine how long the single revolution takes.
2007-07-23 10:38:43 · answer #8 · answered by DavidK93 7 · 0⤊ 1⤋
Speed of a wheel is expressed in rpm which means revolutions per minute. If it's one revolution per minute, it takes on minute to complete one revolution. If it's 10 rpm, then the equation is 1min/10revs or 1/10 minutes for one revolution. If it's 60 rpm then the equation is 1min/60revs or 1/60 minutes for one revolution.
2007-07-23 10:41:56 · answer #9 · answered by friendlyadvice 7 · 1⤊ 0⤋
Er.......do you times the axis of the....erm...equlateral triangle.....cheese on toast? Sorry chap, fcuk knows
2007-07-23 10:38:56 · answer #10 · answered by cockneyboy 2 · 1⤊ 4⤋