Spring compressed by 1864 g mass on surface with friction

[bkhofmann]

Homework Statement

A 1864 g mass is on a horizontal surface with mk = 0.380, and is in contact with a massless spring with a force constant of 631 N/m which is compressed. When the spring is released, it does 3.15 J of work on the mass while returning to its equilibrium position. Calculate the distance the spring was compressed.

What is the velocity of the mass as it loses contact with the spring?

Homework Equations

The Attempt at a Solution

None yet

Would someone help me out with a starting point or some hints on this, thanks!

 

[LowlyPion]

Homework Statement

A 1864 g mass is on a horizontal surface with mk = 0.380, and is in contact with a massless spring with a force constant of 631 N/m which is compressed. When the spring is released, it does 3.15 J of work on the mass while returning to its equilibrium position. Calculate the distance the spring was compressed.

What is the velocity of the mass as it loses contact with the spring?

Homework Equations

The Attempt at a Solution

None yet

Would someone help me out with a starting point or some hints on this, thanks!

What is the definition of a Joule?

 

[bkhofmann]

1j=1nm