Asked by Anonymous
A 9.50 kg rocket produces a thrust of 365 N. The rocket is pointed upward and the bottom of the rocket is attached to, and is resting on, a spring with a spring constant of 320 N/m. If the spring compressed 0.291 m prior to launch, what is the rocket's speed when the rocket is launched and the spring has stretched 0.378 m?
Answers
Answered by
bobpursley
Assuming the rocket mass has not changed.....???
spring: stored energy released: k(.291^2)-k(.378^2)
energy from engine: 365*(.291+.378) (force*distance)
add those energies, then set equal to 1/2 mv^2, solve for v
spring: stored energy released: k(.291^2)-k(.378^2)
energy from engine: 365*(.291+.378) (force*distance)
add those energies, then set equal to 1/2 mv^2, solve for v
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