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PoohBah716
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Homework Statement
A spring (k=4200N/m) and box A (mA=120kg) are on a frictionless incline, as shown below . Box A is pressed against the spring such that it is compressed 1.0m, and then released. Box A then hits, and sticks to box B, 1.0m farther up the ramp from the uncompressed position of the spring (massB=80kg) (i.e. the collision happens 2.0m total distance from A's initial position). Box B is held at rest until it is struck by A, then it is free to move. How far up the ramp will the two of them travel up the ramp before starting to slide back down?
Homework Equations
MaVa+MbVb=MaVaf+MbVbf
The Attempt at a Solution
h=2sin30
h=1
v=1/2*(m+m)=(M+m)gh