College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 32

A 2.0-kg mass resting on a horizontal frictionless surface is connected to a fixed spring. The mass is displaced 16 cm from its equilibrium position and released. At t = 0.50 s, the mass is 8.0 cm from its equilibrium position (and has not passed through it yet). (a) What is the period of oscillation of the mass (b) What are the speed of the mass and the force on the mass at t = 0.50 s