Reasons for miscalculation of spring work and change in ke

AI Thread Summary
The discussion revolves around discrepancies between calculated and experimental values for the height a projectile reaches when launched by a compressed spring. Factors like the ideal conditions of Hooke's Law may not hold true if the spring is compressed excessively. The user also inquires about how cutting the spring affects its stiffness and the average force exerted, questioning whether it would result in a higher or similar launch height. Suggestions for improvement include providing a detailed description of the experimental setup to identify potential errors. Overall, understanding the limitations of spring mechanics and experimental conditions is crucial for accurate results.
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can anyone help me in figuring out why i got different answers in my calculated value to my experiment value (or maybe its normal) when i calculated the aproximate distance a projectile would shoot up when i compressed a spring thru a distance. i calculated the spring constant and found the final velocity of the projectile once in projectile motion(which would make it its initial as a projectile).i checked the distance it traveled vertcally.compred it to my calculated one and they were very different. can anyone help explain why?friction, weight of the spring were not considered.thank
 
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also how does cutting the spring change the stiffness or av. forfce exerted. ?will it go higher or the same?any help is good
 
Hooke's law is under idealized conditions that you probably broke by compressing the spring as far as possible - at least this is a typical thing to do when shooting things up with springs. A full description of the setup and how you extracted the spring constant would allow us to better spot the problem
 
oh ok thanks
 

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