加速度合成定理的几何法证明

为了直观地给出牵连运动为一般运动时加速度合成定理中科氏加速度产生的力学原因，从加速度的原始定义出发，据表达式

The geometrical proof of acceleration composition theorem

For acceleration composition theorem, when the carrier motion is general, to sho w the mechanical cause of Coriolis′ acceleration, based on the original concept of acceleration, expression aａ＝lim Δt→0Δv aΔt and velocity composition theorem v a＝vｅ＋vｒ， acceleration composition theorem is deduced by geometrical method. This metho d can clearly show the mechanical cause of Coriolis′ acceleration.The relative ve lo city direction being changed by carrier motion and the position of carrier point being changed by relative motion, two items of additional acceleration are gene rated, and each part has the same expression as ω ×vｒ， so the expression of Coriolis′ acceler ation is aC＝2ω×vｒ .