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nightshade123
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Homework Statement
A cylin drical con crete sil o is 4m in diameter and 30m high. it consists of a 6000kg concreet base and a 38000kg concrete cylindrical concreete walls. locate the center of mass of the silo (A) when it's empty and (B) when it is two thrids full of silage whose density is 800kg/m^3. neglect the thickness of the silo walls and base.
Homework Equations
The Attempt at a Solution
Part A
6000kg*y = 38000kg (.5(30m) - y)
y = 12.95 m
or
Center of mass is the y direction is 13m high and in the middle of the silo
Part B
Volume = 2m^2*PI*20m = 251.327 m^3
Mass = 251.327 m^3 * 800 kg / m^3
= 201062 kg
h of grain = 20m
201062kg*y = 38000kg*(20m -y)
6.29*y = 20m
y= 3.17m
the real question is part B i don't think that makes sense...