This simulation models the behavior of a block of mass M (kg) on a ramp with coefficient of friction μs as the angle of the ramp is gradually increased.

此程式模擬一質量M公斤的方塊置於方塊與斜面間摩擦係數為us的斜面上，當逐漸增加斜面仰角後方塊下滑的運動過程。