Questions and Answers
What is the equation for the torque on each particle of the rotating disk?
$\tau = \omega m r^2$
What is the expression for the net torque on the disk?
$\sum \tau = \sum (\omega m r^2)$
What is the moment of inertia, I, of the whole body in terms of the masses and distances of the particles?
$I = \sum (m_i r_i^2)$
Why is the angular acceleration, a, not involved in the sum of individual torques on all the particles?
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