you have 2 simliar coins, and we make one spin on the edge of the other. How many times does the spinning coin turn on itself each time it makes an entire lap around the stationary one?
2007-05-07 13:49:49 · 5 answers · asked by nvrland_believer 2 in Entertainment & Music ➔ Jokes & Riddles
please explain how u got answer
2007-05-07 13:55:07 · update #1
Twice.
2007-05-07 13:53:11 · answer #1 · answered by Barkley Hound 7 · 0⤊ 0⤋
Once.
There is a one to one mapping of the perimeters of both coins.
Tracing that mapping causes a single relative rotation between the two coins.
2007-05-07 15:49:14 · answer #2 · answered by J C 5 · 0⤊ 0⤋
3.14 times, the formula to find the circumfrence (area around a circle) is 2pi(3.14) radius, so 2r is really the diameter, so it is piD, if the coin is spining around another coin the same size, than every time it takes one spin it would be the length of the diameter, so divide your formula by the diameter and you get 3.14 or pi.
2007-05-07 14:20:37 · answer #3 · answered by Tom Riddle 2 · 0⤊ 0⤋
as many times as it takes-+
2007-05-07 14:04:30 · answer #4 · answered by Anonymous · 1⤊ 0⤋
I DUN KNOW?
2007-05-07 13:52:49 · answer #5 · answered by shorty 2 · 0⤊ 0⤋