Homework Help: physics

Posted by Nazgul on Tuesday, March 8, 2011 at 3:41am.

A spring gun is made by compressing a spring (assumed to be perfect) and latching it. A spring of constant k = 60 N/ m is used and the latch is located at a distance of 7 cm from equilibrium. The pellets have mass 4 g. What is the muzzle velocity of the gun?

physics - drwls, Tuesday, March 8, 2011 at 7:01am
Assume that (1/2) M V^2 = (1/2) k X^2
which means that all of the spring energy is converted to kinetic energy of the pellet, which has mass 0.004 kg.

The spring compression is X = 0.07 m

V = sqrt(k/M)*X

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