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Answer to Question #83110 in Classical Mechanics for erfan
Question #83110
A block of wood with a cross - sectional area A and mass density ρ when it floats in the water, displaces the volume equal to a V of water. If a person (mass of person = m jumps on this piece, find a period of small oscillations.
Expert's answer
F=ρgAx=kx
ρ=m/V.
T=2π√(m/k)
T=2π√(m/(m/V gA))
The period of small oscillations is
T=2π√(V/Ag)
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Comments
Yes, I got it. Thanks for answering and guiding
Dear erfan, yes. Newton's second law gives us an equation of motion in general form. But this method is more complicated.
Thanks for the answer. Is the mass of wood not important? Can we use Newton's second law to solve?
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