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NikkiNik
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Homework Statement
A spring, of negligible mass and which obeys Hooke's Law, supports a mass M on an incline which has negligible friction. The figure below shows the system with mass M in its equilibrium position. The spring is attached to a fixed support at P. The spring in its relaxed state is also illustrated.
Mass M has a value of 275 g. Calculate k, the spring constant.
The mass oscillates when given a small displacement from its equilibrium position along the incline. Calculate the oscillation frequency.
http://i32.photobucket.com/albums/d2/NikkiNik88/plot.png
Homework Equations
a=-k/m(x)
f= 1/2pi (sqrt(k/m))
The Attempt at a Solution
I used the mass given and .3m as x. I used the acceleration due to gravity for a.
I got -8.99 kg*m?? Is that correct
And for part b:
I used the equation above to solve for f
I got 0.9099 Hz