Physical Pendulum Differential Equation
The torque on a physical pendulum is given by τ = -mgd sin θ. Which of the following represents the differential equation of motion for the pendulum when the small-angle approximation is applied?
A
I(d²θ/dt²) + mgd sin θ = 0
B
I(d²θ/dt²) - mgdθ = 0
C
I(d²θ/dt²) + mgdθ = 0
D
m(d²θ/dt²) + mgdθ = 0
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