- #1
scarne92
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Homework Statement
Consider the system below. The 2.50 kg mass compresses the spring (k = 805 N/m) a distance of 0.230 m from equilibrium. The mass is then released from rest. It slides a total distance of 1.20 m on the table top where it feels a force of kinetic friction of 5.60 N before it slides off the edge. If it hits the ground with a speed of 6.64 m/s, find the height ∆y of the table.
Homework Equations
Vf^2 = Vi^2-2g∆y
The Attempt at a Solution
I started doing the spring force part of the problem, but then the thought hit me that the speed shouldn't matter in the x direction because it is just a free fall problem. I'm not sure if I'm correct in that thinking though.
here's what I got.
∆y = (Vf^2 - Vi^2)/-2g
∆y = (6.64^2 - 0^2)/-2(9.81)
∆y = 44.0896/-19.62
∆y = 2.25m