Help with oscillation problem thanks

1. Nov 6, 2011

jlin94

help with oscillation problem!!! thanks

i have no idea how to do this. could someone please explain how to do this. thank you, really appreciate it

A mass of 311 g connected to a light spring
of force constant 37.2 N/m oscillates on a
horizontal, frictionless track. The amplitude
of the motion is 7.6 cm.

1. Calculate the total energy of the system.

2. What is the maximum speed of the mass?

3. What is the magnitude of the velocity of
the mass when the displacement is equal to
1.74 cm?