Question

How to I set up this problem? Pet bikes to school a couple times a week and travels 2 miles and 15 min. Determine the wheel's rpm if the bikes tire has a diameter of 26inch. Show set up.

Answer 1

2 miles in 15 minutes?

Answer 2

yea I'm guessing whhen you write it in dymensional analysis yud do 2mil/15min

Answer 3

so find the circumference of the bike wheel. first
2 pi r = 2 pi 26/2 = 26*Pi ** it 26/2 cuzz radious is half diameter

Answer 4

but they say just to write it out, like write it out in dymentional analysis ; like dont solve it

Answer 5

convert miles to inches. it is 126720 inches

now devide that by circumference of bike
126720/26*pi

(63360/13)*Pi

Answer 6

oh you have to first solve it then once you solve it you can use the dimensional analysis.

Answer 7

yea like I just have to write out the dymentional analysis I dont have to solvw

Answer 8

(63360/13)*Pi rotations/ 15 min

(4224/13)*Pi rpm :P I guess. is the answer as for dimensional analisys it a bit more complicated.

Answer 9

I guess you can include dimenstional analysis to solve the individual parts. but not the whole thing.

Answer 10

it not easy if you are new :P

Answer 11

you suck at teasing. Stick to math :P

Answer 12

I know.

Answer 13

Lol, oh my godd

Answer 14

que?

Answer 15

,_,

Answer 16

outside her window or on tv. Certainly not here :P