Homework Help: physics

Posted by jon on Saturday, November 21, 2009 at 12:45pm.

A spring-loaded dart gun is used to shoot a dart straight up into the air, and the dart reaches a maximum height of 12 meters. If the spring is compressed only half as far the second time, how far up does the dart go this time (no friction and using Hooke’s Law on the spring) Thanks

physics - bobpursley, Saturday, November 21, 2009 at 12:48pm
PE in the spring= 1/2 k x^2
so if x is 1/2, how much energy is stored?

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