1. A 2.0 kg particle moves along the x axis. Its position varies with time according to x = t + 3.0t^3, Where x is in meters and t is in seconds.
(a) Find the work done on the particlein the interval t = 0 to t = 1.70s.
2. A certain harmonic oscillator consisting of a 5 kg mass and a spring has a total energy of 15 J. The amplitude of motion is 3 m, k = 3.33 N/m, the max speed = 2.45 m/s.
(a) What is the period of the oscillation?