Physics

Physics

Problem

Which expression gives the total work done on a rigid body when three constant torques τ1\tau_1, τ2\tau_2, and τ3\tau_3 act simultaneously while the body undergoes an angular displacement Δθ\Delta\theta? a) W=τ1+τ2+τ33 ΔθW = \dfrac{\tau_1 + \tau_2 + \tau_3}{3}\,\Delta\theta b) W=τ12+τ22+τ32 ΔθW = \sqrt{\tau_1^{2}+\tau_2^{2}+\tau_3^{2}}\,\Delta\theta c) W=(τ1+τ2+τ3) ΔθW = (\tau_1 + \tau_2 + \tau_3)\,\Delta\theta d) W=τ1 Δθ+τ2 ΔθW = \tau_1\,\Delta\theta + \tau_2\,\Delta\theta

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