Question

The wheel of a car is turning at rate 66 rev/min. Express the angular speed in rad/min.

A little help please :)

Answer 1

@kmeds16 Do you know how many radians the wheel turns in 1 revolution?

Answer 2

2 pi? which is 360 degrees?

Answer 3

yes, so we'll let it be 2 pi radians or 2*3.14= 6.28 rads per revolution

Answer 4

uhmm aw okay.....

Answer 5

How many revolutions the wheel is turning in a minute?

Answer 6

66 rev/min

Answer 7

So how many radian turn in a minute?

Answer 8

do i have to multiply 66 and 2 pi? right?

Answer 9

132?

Answer 10

yes, but use 3.14
\[66\times 2\pi\]
\[66\times 2 \times 3.14\]
radians/min

Answer 11

ahhhhh so it's 132pi rad/min :) got it. and i have to use 3.14... ok thanks!! :)

Answer 12

welcome :)