SHM horizontal spring mass system

[bionerdette]

This problem states that a mass m is attatched to a spring with spring constant k and is pulled aside a distance A from its equilibrium position x=0.

a) what is the speed as it passes the position x=0?
I know that at A and -A v=0 and at x=0 v=max, but I can't remember how to get an equation for what that max is!

b)what is the net force on the mass at position x=A?
would this be F=-kA?

c)what is the speed when x=A/4?
i don't have any idea how to do this, but i think once i get part a i will understand

any help would be greatly appreciated!

 

[Hootenanny]

Hi bionerdette and welcome to PF,

For future reference, we have Homework forums for such questions, but don't worry you thread will be moved there soon. With regards to your question,

a) what is the speed as it passes the position x=0?
I know that at A and -A v=0 and at x=0 v=max, but I can't remember how to get an equation for what that max is!

I would consider conservation of energy.

b)what is the net force on the mass at position x=A?
would this be F=-kA?

Indeed it would