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MMONISM
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Homework Statement
A L = 1.48 m long metal rod is pivoted from a point one third of the way along its length. The rod has a mass of 0.208 kg. What period will the rod oscillate with when released from a small angle?
Homework Equations
[itex] T = 2 \pi \sqrt{\frac{L}{g}}[/itex]
The Attempt at a Solution
should I think the rod as a point mass about it's centre mass? and use centre mass to calculate the period by the formula?
This is my approach:
[itex] \frac{1}{2}L-\frac{1}{3}L [/itex] is the length of the string
[itex] T = 2 \pi \sqrt{\frac{L}{g}} = 2 \pi \sqrt{\frac{\frac{L}{6}}{g}} = 2 \pi \sqrt{0.025} = 0.997 s[/itex]
Could someone give me some advice please?