Vibrations and waves

[Dx]

I am curious to know that if a mass on a spring undergoes SHM. when the mass is at its MAX displacement from equilibrium, its instantaneous velocity is what?
is it zero!

can someone explain?
Dx [;)]

[enigma]

Well, just before the mass hits the max displacement, the velocity is +deltaV, and just after it is -deltaV. You have to go through zero to get from + to -.

[Dx]

Dx scratches his head.
I said at MAX displacement that deltav is + or - Max but my teacher says im wrong. It must be less than max but not zero as youve kinda explained, i think
Dx [;)]

Right?

[Tom Mattson]

You had it right the first time: The speed at the extrema of position is zero.

If you are moving this way ----->
and then this way <-----

then at some point you had to stop and turn around.

[Dx]

Hello,

Thanks!
Dx [;)]