Posted by **Melissa** on Thursday, August 4, 2011 at 2:29am.

A spring id vertically, as shown below, and a 500g mass is hung from its lower end. The EQUILIBRIUM extension of the spring is observed to be 10.0cm.

(1) What is the spring constant of the spring?

A: 49N/m

(B) If the is pulled down by 5.00cm and released, what is the frequency of the subsequent oscillations.

A: 1.58

(C) What ist he velocity of the mass at time t=2.5 sec?

(D) What is the acceleration of the mass at time t=4.75 sec?

(E) What is the net force acting on the mass at time t=5.0sec?

(F) What are the potential and kinetic energies of the mass when the displacement 7 =-1.5cm?

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