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April 20, 2014

Homework Help: Physics

Posted by Annabelle on Saturday, July 7, 2012 at 5:11pm.

A 100-g block hangs from a spring with k = 5.2 N/m. At t = 0 s, the block is 20.0 cm below the equilibrium position and moving upward with a speed of 216 cm/s. What is the block's speed when the displacement from equilibrium is 27.0 cm?

The answer is 172 cm/s; but I cannot figure out how to get this answer.

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