A bicycle is moving at a speed v = 3.56 m/s. If the radius of the front wheel is 0.450 m, how long does it take for that wheel to make a complete revolution?
2007-02-21 03:34:58 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Circumference of wheel = 2 pi r = 0.9 pi (distance)
Speed = distance/time
Time = distance/speed = 0.9 pi / 3.56 = 0.79 sec (Answer)
2007-02-21 03:41:28 · answer #1 · answered by daylightpirate 3 · 0⤊ 0⤋
The circumerence of the wheel is: C = 2Ïr
This is the distance (d) at the stated rate for which the time (t) is to be calculated.
So...I'm say to let C = d = 2Ïr
Then by the distance, time, rate equation: d = vt you have:
v is give in the problem ---- 3.56 m/s
==> t = d/v = 2Ïr/3.56
==> t â 0.79 s
2007-02-21 11:47:05 · answer #2 · answered by Anonymous · 0⤊ 0⤋
1. find the circumference of the wheel (2pi*R)
2. take the circumference of the wheel and divide by the speed = answer in seconds.
2007-02-21 11:40:41 · answer #3 · answered by Jennifer B 3 · 1⤊ 0⤋