Solar_Chris
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Question 56 in the 6 minute solutions for Machine Design is a problem about launching balloons with springs. I believe the solution to the number of springs required to launch the balloons is wrong. This should be a conservation of energy analysis. The springs do not exert the full 2.51 pound force/per spring the entire duration of the launch. The problem should be set up as (1/2)*mass of balloon / (gc) * (velocity)^2 = (1/2)*(Keq)*(Deflection)^2.
The kinetic energy induced into the balloon is equal to the energy stored in the springs prior to launch. Does anyone else think the solution in the book is wrong.
The kinetic energy induced into the balloon is equal to the energy stored in the springs prior to launch. Does anyone else think the solution in the book is wrong.
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