- #1
Faefnir
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Homework Statement
Two masses of 2 kg are attached to the extremities of a 5 cm long, negligible mass and thin bar, free to rotate around a horizontal axis passing through its center. A drop of wax falls on one of the two masses at ##v = 3 \frac{m}{s}## and sticks to it. Retrieve the angular velocity of the system immediately after the impact
Homework Equations
[/B]
Angular moment:
$$ L = I \cdot \omega $$
$$ L = rp = rmv $$
Inertia moment:
$$ I = (M + M + m) \cdot r^2 $$
The Attempt at a Solution
I don't know if the wax drop mass was deliberately omitted in the text, but if so, how can I get it? Without that I can not get ## \omega ##. I know I should do some attempt, but the only thing that comes to mind is the inertia moment for a thin bar
$$ I_{MC} = \frac{1}{12} m \cdot l^{2} $$
Can you help me? Thanks in advance