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April 19, 2014

Homework Help: physics

Posted by sunny on Thursday, September 16, 2010 at 1:24pm.

A 5.0 gm marble is fired vertically upward using a spring gun. The spring must be compressed 8 cm if the marble is to just reach a target 20 m above the marble’s position on the compressed spring
.(a) What is the change in the gravitational potential energy of the marble-earth system during the 20m ascent.
(b) What is the change in the elastic potential energy of the spring during its launch of the marble

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