Which statements are correct for angular SHM and physical pendulums under the small-angle approximation?
Select all that apply

Question

Which statements are correct for angular SHM and physical pendulums under the small-angle approximation?

G1 Physics · Accepted Answer

For a physical pendulum, torque ≈ −Mgdθ for small θ. Thus, Iθ̈ = −Mgdθ, giving T = 2π√[I/(Mgd)]. For a torsional oscillator, restoring torque = −Cθ, so Iθ̈ = −Cθ and T = 2π√(I/C). Therefore all four statements are correct.