(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

spring-loaded gun on tabletop. Target box 2.20m horizontally from edge of table on floor.

Shot 1 - spring compressed 1.10 cm - falls 27 cm short.

How far should the spring be compressed to hit the target with shot 2?

2. Relevant equations

GPE1 + SPE1 + KE1 = GPE2 + SPE2 + KE2<br>

0 + k(x^{2})/2 + 0 = mgh + 0 + 0

3. The attempt at a solution

I've been beating myself up trying to solve this one and the next one I'll post and I don't know where to start. <p>

I tried:<br>

to use a range solution (V^{2}Sin(2Theta)/g) and cut it in half to get the initial velocity so I could attempt to figure out KE (mV^{2/2 - but don't have an angle<p> to figure out time of flight - but don't have the height of the table<p> I don't have a spring constant for it. And I just don't think I should be using proportions to determine the answer, not this late in a physics (w/calculus) class.<p> I don't know where to start, and btw it didn't give me mass either.<P? Thanks in advance o}

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# Homework Help: Spring gun problem can't find start

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