Simple Harmonic Motion (tuning fork)

[bebop721]

Q. the end of on of the prongs on a tuning fork that executes simple harmonic motion of frequency 1266 hz has an amplitude of 0.4944mm. find the speed of the end of the prong when the end has a displacement of 0.2037mm.

okay i know that you use the v(t) equations and all but where does the displacent fit in and what about "t" in those equations i am lost please someone help

 

[Doc Al]

You need to use both the displacement and velocity equations for simple harmonic motion. Review them here: http://hyperphysics.phy-astr.gsu.edu/hbase/shm.html#c2"