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A spring has an unstretched length of 10 cm. When a 150 g mass is added...

A spring has an unstretched length of 10 cm. When a 150 g mass is added the spring stretches to a total length of 15 cm, where the mass rests at equilibrium.

A. What is the spring constant of the spring?

B. Now the mass is pulled down by an additional 5 cm, so that the total length of the spring is 20 cm,and then released. What is the frequency and period of the subsequent oscillation?

C. Draw a graph—including numbers on the position and time axes—that shows the subsequent motion of the spring about the equilibrium position described in part B. Distances above equilibrium are positive; distances below, negative. Show on your graph the amplitude and the period of this motion

D. Where on your graph for part C is the speed the greatest? Where is the acceleration (magnitude) the greatest?

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Answer #1

D) speed is greatest at equilibrium position and acceleration is greatest at extreme position. You can see in the figure. I apologize for my bad drawing but I believe one can figure out the information from that.

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