correct units for all variables. It may be helpful to draw the graph. A 0.4kg block is attached to an ideal vertical spring. The block oscillating in SHM travels 10cm between the two extreme points, and it does that in 0.314 seconds. (a) Find the angular frequency of the block-spring system and find the spring constant. [2] You start your stopwatch (i.6,,t=0 s) when the block is located at x=1.0cm while moving in the negative direction. (b) Using a "sin" based expression with a positive phase constant, find i) the quadrant and ii) the value for the phase constant. [3] (c) Find an expression for the displacement of the block as a function of time. [1] (d) Find the third time, and the block's position, when the block's kinetic energy is half its maximum. [4]