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

A sling shot can launch a 50gram rock at a speed of 24m/s if it is stretched .4meters before release. Find the average force applied to the rock

2. Relevant equations

Spring force = 1/2*k*x^2

1/2kx^2 = 1/2mv^2

3. The attempt at a solution

tried to solve for K using 1/2kx^2=1/2mv^2 <-- someone told me to use this formula i dont know if its right

k=180

put that in the formula for spring force Fs=1/2kx^2

gave me the answer of 14.4N

however the correct answer should be 36N

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# Homework Help: Find the Force applied to a rock by a slingshot

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