Hi there! First off, I am new to these forums so be nice! The question I have isn't homework, but rather personal curiosity. 1. The problem statement, all variables and given/known data Imagine that you have some type of cart on a conveyer belt. The cart is held stationary with respect to the world by a rope. The conveyer belt moves at a velocity with respect to the cart. Assuming we can neglect all air resistance (since the cart is stationary with respect to the surrounding air), how does the force on the rope (in Newtons) change with increasing conveyer belt velocity? (see attached diagram) 2. Relevant equations The focus here is how the force changes with rolling friction and velocity. Since I am not actually in any physics class I become stumped at this point as how to represent this problem using an equation. 3. The attempt at a solution I assume that the force on the rope would increase at some rate proportional to the coefficient of rolling friction, and the velocity of the conveyer belt.