(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

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.

2. Relevant equations

3. 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 dont think that makes sense...

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Center of mass of concrete wall

**Physics Forums | Science Articles, Homework Help, Discussion**