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Closed
Projectile from spring
To fire a projectile of mass m upward from a spring gun, you push the projectile down against a spring of elastic constant k and let it go. In terms of k and m, how far down must you compress the spring so that on release the projectile will go further upward than the end of the spring?
Answer
Closed
This problem could be evaluated the following 2 methods: energy conservation or balancing forces.
(1/2)*kx^2 = (1/2)*mv^2
or
kx = ma
Then, you solve the equation for either v or the second order equation depending the approach you choose.
Afterwards, you should simply find the distance that is necessary to go past that length l that you choose for x.
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