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CATAGORY: Mechanics
QUESTION: The radius bone in a forearm has an average effective
cross-sectional area of 1.33 x 10 to the -4 meters squared.  How much
compressive force can it withstand before fracturing?
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```  There is a maximum compressional STRESS that bone can withstand
Your text book should have the value that you need to use in a table
or in the text book Lets call that value STRESS(bone).  The stress
is related to force ansd area via

(1)       STRESS(bone) = F/A

Where F is the maximum force and A is the cross sectional area of the
bone. Solving for F gives

(2)     F = STRESS(bone) A

In your case A =1.33 x 10^4 m^2 but without the value for
STRESS(bone) that is as far as we can go. So find the maximum
STRESS(bone) in your text and multiply by the cross sectional
area A and that will give you F. Make sure you get the right
units. If A is meters squared then STRESS(bone) (or whatever your
book calls it) should be Newtons per meter squared.
```

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