- #1
DrSmiles
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Homework Statement
A 100 g granite cube slides down a 35 degree frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 215 g steel cube at rest.
How high above the table should the granite cube be released to give the steel cube a speed of 200 cm/s?
Homework Equations
Conservation of momentum and energy equations. I don't know if there are more?
The Attempt at a Solution
For momentum: .1v1=.1v1_f+.215v2_f
For energy: .1(9.81)h=.5(.1)v1_f^2+.5(.215)v2_f^2
I know I'm supposed to solve a system of equations, but I have way too many variables right now. What am I doing wrong? What should I do next?