Posted by **Hannah** on Monday, March 31, 2014 at 8:26pm.

Astronauts in space cannot weigh themselves by standing on a bathroom scale. Instead, they determine their mass by oscillating on a large spring. Supppose an astronaut attaches one end of a large spring to her belt and the other end to a hook on the wall of the space capsule. A fellow astronaut then pulls her away from the wall and releases her. The spring's length as a function of time is shown in the figure below.

Her mass is 72.95 kg.

What is her speed when the spring's length is 1.16 m?

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