Does Centripetal force cause a tangential force?

Kalus

If I have a string with a lump on the end and is being swung in a circle with a continuous angular velocity then I know that:

[tex] F= m\frac{v^2}{r}[/tex]

or using angular velocity,

[tex] F= m r \omega^2 [/tex]

But, is there a tangential force acting at the point of mass in its instantaneous direction, and if so, what is it equal to?

Kalus	Does Centripetal force cause a tangential force? If I have a string with a lump on the end and is being swung in a circle with a continuous angular velocity then I know that: [tex] F= m\frac{v^2}{r}[/tex] or using angular velocity, [tex] F= m r \omega^2 [/tex] But, is there a tangential force acting at the point of mass in its instantaneous direction, and if so, what is it equal to?