Answer :
To find:
The velocity in radians per second.
Solution:
We know that one revolution is equal to 2pi radians and one minute is equal to 60 seconds
So,
[tex]\begin{gathered} 1500\text{ RPM}=\frac{1500\times2\pi}{60}\text{ radians per second} \\ =50\pi\text{ radians per second} \end{gathered}[/tex]