How Do You Calculate Angular Speed from Revolutions Per Second?

[jjg242]

just hoping to get this double checked:

10. A grindstone spinning at the rate of 8.3 rev/s has what approximate angular speed?



a. 3.2 rad/s

b. 26 rad/s

c. 52 rad/s

d. 81 rad/s



answer: C, I simply did ; 2*π*8.3 rad/s = 52.1 rad/s. is this correct?

 

[neutrino]

It is correct.

 

[billiards]

I concur...

 

[asrafally]

just hoping to get this double checked:

10. A grindstone spinning at the rate of 8.3 rev/s has what approximate angular speed?



a. 3.2 rad/s

b. 26 rad/s

c. 52 rad/s

d. 81 rad/s



answer: C, I simply did ; 2*π*8.3 rad/s = 52.1 rad/s. is this correct?

2 x 3.14 x 8.3 = 52.124
52 rad/s
i think so