- #1
njanek
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Homework Statement
If a mass (.5 lb) is pushed down a ramp at a constant unknown force into a spring, compressing it 3 inches, what is the spring constant?
Homework Equations
Mass: .5lb
Time: 3 seconds
Length of ramp: 28 inches
inital height of ramp: 5.5 inches
final height: 0
µ: .52
The ramp angle is 15o to the ground
The Attempt at a Solution
I understand that if I set the equation up like this:
1/2mv2o + mgho + 1/2Kx2o + Wnc = 1/2mv2 + mgh + 1/2Kx2
And plug in what I know, I will find the answer for the spring constant, But I'm having trouble finding the work of the non conservative forces. and the final and initial velocities. I just need help figuring them out so I can solve for K.
Thank you to anyone who helps :) I really appreciate it!