Motion of a Spring A weight hanging on a vertical spring is set in motion with an upward v...

Motion of a Spring A weight hanging on a vertical spring is set in motion with an upward velocity of 4 cm/sec from its equilibrium position. A formula that gives the location of the weight in centimeters as a function of the time t in seconds is x = − sin(πt). Find the period of the function and sketch its graph for t in the interval [0, 4].