Question
A cylindrical log of uniform density and radius 20.0
cm floats so that the vertical distance from the water
line to the top of the log is 8.00 cm. What is the density
of the log? (Hint: draw a good picture of the circular
end of the log.)
cm floats so that the vertical distance from the water
line to the top of the log is 8.00 cm. What is the density
of the log? (Hint: draw a good picture of the circular
end of the log.)
Answers
Henry
Dia. = 2 * 20 = 40 cm.
hb = height below the surface.
Dw = 1g/cm^3 = The density of water.
hb = Dl/Dw * h = 40-8 = 32 cm.
Dl/1 * 40 = 32, Dl = 0.8g/cm^3.