QUESTION 2 A 150 g object is in simple harmonic motion on the end of a horizontal spring with spring constant 300 Nm-1 . When the object is 1.2 cm from its equilibrium position , it is observed to have a speed of 30 cm s-1. Find : (a) The total energy of the object at any point in its motion;(b) The amplitude of its motion;(c) The maximum speed of the object.

QUESTION 3

A 2 kg block is attached to a spring for which k = 200 Nm-1 . It is held at an extension of 5 cm and then released at t = 0. Find : (a) The displacement as a function of time ;(b) The velocity when x = + A/2;(c) The acceleration when x = + A/2.