Question

wheel of a bus is 1 meter diameter and rotating at 540rpm. what is the speed of bus?

Answer 1

Here, 2r(diameter)= 1m. So, r= 1/2m
Speed of wheel = 540rpm= 540×2πr = 540×2×π×(1/2) = 540π meters/ minute.

Now, to convert it in m/s , we need to multiply by 60.
$540\pi \times 60 = 3240\pi \ \:$
Hence, speed of bus is 3240π m/s.

Answer 2

Answer is in the above figure.