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38. From Eq. 1523 (in absolute value) we find the torsion constant:
0.20 N m
0.235 N m/rad .
0.85 rad
τ
κ
θ
⋅
==
=
⋅
With
I
= 2
mR
2
/5 (the rotational inertia for a solid sphere — from Chapter 11), Eq. 15–23
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 Spring '08
 Any
 Physics, Inertia

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