Question

A wooden piece floats on water with 1/4th part outside. What is the density of wood?
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Answer 1

Answer:

Explanation:

Use Archimedes principle

Buoyancy = Volume Submerged x density of liquid x g

This buoyancy supports the weight of wood

Let volume be V

Volume submerged = 3/4V

Density of wood = p,

density of water = d

so, V p g = 3/4 V d g

p = 3/4 d

this is the answer