A video clip of a mass hanging on a spring (like shown in the sketch at the righ

Question

A video clip of a mass hanging on a spring (like shown in the sketch at the right) produces a graph of the y-velocity of the mass as a function of time shown below. The y-axis is shown in the figure with the positive direction indicated by the arrowhead. The graph starts in the second frame of the video. For this problem, ignore friction and air drag 0.5 0.0 0.5 0.5 1.0 1.5 Time is) a) At ~O.15 s when the velocity is at a negatlve maximum, the position of the mass is At its lowest point b) At 0.4 s when the velocity is zero, the position of the mass is c) At n0.8 s when the velacity is zero, the net force on the massi Select d) At 0.4 s when the velocity is zero, the force of the spring on Lhe mass is Selecl e) At 0.8 s when the velocity is zero, the force of the spring on the mass is

Explanation / Answer

(a) mass is at equilibrium

(b) lowest point

(c) highest point

(d) maximum and upward

(e) maximum and downward

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