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qpham26
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Homework Statement
Hi I was reviewing for my final and I came across this problem:
Problem:
Basically there is a 6in long cylinder with dia = 24in
Given weight density: 490 lb/ft^3
Each Hole is drilled symmetrically, each has 6in dia and equally space around a 10in dia circle concentric with the cylinder.
This is the picture of the frontview of the cylinder: https://lh4.googleusercontent.com/-8m1r4npC7cg/T11OqGF6qhI/AAAAAAAAABY/4v2HCrEqhd4/s333/cyinder.png Thanks for your time and consideration.
Appreciate it!
Homework Equations
The Attempt at a Solution
Approach
So what I would do is:
-First get that weight density into mass density by dividing it by 32.2
-Then find the mass of the cylinder without holes.
-Find mass of each holes.
-calculate the M of I of each hole about the center axis (parallel axis theorem)
-calculate the M of I of the whole solid cylinder (no holes)
-subtract the M of I of the holes from the whole cylinder
Will I get the correct answer based on the technique above?
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