Physics

Physics

Problem

Which of the following expressions correctly relates the net external torque ∑τ\sum \tau acting on a rigid body about a fixed axis, its rotational inertia II, and its angular acceleration α\alpha? a) ∑τ=Iω2\sum \tau = I\omega^{2} b) ∑τ=I α Δθ\sum \tau = I\,\alpha\,\Delta\theta c) ∑τ=I α\sum \tau = I\,\alpha d) ∑τ=12I ω2\sum \tau = \dfrac{1}{2} I\,\omega^{2}

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