- #1
Matt1234
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Homework Statement
A horizontal spring, of force constant 12 N/m is mounted at the edge of a lab benchto shoot marbles at targets on the floor 0.93 m below. A marble of mass 8.3 x 10 -3 Kg is shot from the spring, which is initally compressed a distance of 4.0 cm. How far does the marble travel horizontally before hitting the floor?
Homework Equations
Eg = mgh
Ee =0.5 k x^2
Ek= 0.5 m v^2
time to hit floor
d = 0.5 (g) t^2
and Vx = d / t
The Attempt at a Solution
Ek = Eg+ Ee
then find t then use t to find d, that gave me 1.97 m but the answer in the book was 0.66 m. This may be due to the fact that i do not know the launch angle and could not incorporate it into my calculation. I am confused.