A 1.3-kg mass is attached to a spring with a force constant of 52 N/m. If the

Question:

A 1.3-kg mass is attached to a spring with a force constant of 52 N/m. If the mass is released with a speed of 0.28 m/s at a distance of 8.1 cm from the equilibrium position of the spring, what is its speed when it is halfway to the equilibrium position?