It is critical that the track is perfectly level so that the force of gravity can be perfectly balanced by the Normal force. Use the digital level to check the level of the track. If an adjustment is needed contact the TA. 2. Gently place the fan cart on the track, and ensure the wheels of the cart are properly in the grooves of the track. The cart slides easily and smoothly along the track when all the wheels are in the track grooves. Notice the removable weights which can be placed along the sides of the cart. Include your free body diagrams and