Station 7

There are several forces acting on the cart while it is on the track. They are: the downward gravitational force of the earth on the cart; the normal force of the track on the cart; and the force of the air on the cart. When the cart is on the right side of the track, the fan needsto be at a lower speed than it would need to be on the left side of the track. Thyis is because the slop eon the right side of the track is smaller than the slope on the left side of the track. You would need less air force on the right side of the track because their is less gravity acting on it. So the net forceshoudl be closer to zero if the force of the air and the force of gravity are closer in size. On the left side of the track, the fan should he at a higher speed, because there is a higher force of gravity acting on the cart, therefore we need the air force to be higher so they can be equal.