In SHM, when does the particle experience its maximum restoring force?
**Energy distribution** shows maximum kinetic at equilibrium and maximum potential at extremes, sum constant. This relation enables calculation of amplitude, velocity at any displacement via v = ±√(2(E-U)/m), and understanding of energy storage in oscillating system for NEET problems. The restoring force ( F = -kx ) is maximum at the extreme positions ( x = ± A ), where displacement is greatest, coinciding with maximum potential energy. Applying x = A cos(ωt + φ), v = -ωA sin(ωt + φ), a = -ω²x and E = ½kA² = ½mω²A², result At the extreme positions follows, reflecting SHM dependence on amplitude A, ω and system parameters.
Ref: NCERT > Physics Book > Oscillations > Energy in SHM - Kinetic, Potential and Total