How to Win a Hot Wheels Derby on a Moving Treadmill



If the force on the left wheel is greater than on the right, it can produce a net torque rotation of the car to the right. However, for some spinning cars this is not a problem. Let’s say a car turns left and heads down the track in a diagonal path (not directly below). Now there is a lateral force on the wheels. This will push one wheel on one side of the car into the axle and pull the other wheel away from the axle. It is possible that this pushing and pulling of the wheels may alter the effective coefficient of kinetic friction as a result of which the varying force of the breakage causes it to turn the other way and directly reverse the tilt. These are the lucky cars that win the most.

What about the Wall?

Let’s say a car turns left and moves to the left side of the treadmill until it contacts the side wall. It cannot continue to move to the left because there is an obstacle there. If it is hit at a shallow angle, the wall can act with lateral force to turn it “down.” However, if it continues to push the sidewall, there is a high degree of turbulence between the side of the car and the wall. This turbulence force will push the tilt and decrease the force of the preference net If this turbulence force on the wall is right amount, the net force will be zero and the car will not accelerate. It will just stay in the same position.

Is Treadmill Ease More Important?

In the analysis of height, none of the forces depended on the speed of the treadmill. And if a car moves straight on the track, then the speed of the treadmill doesn’t matter. But what about a car that moves at an angle? Clearly, in a real-life race with cars that can move in any direction, track speed is important. OK, so just imagine we have two cars at the same speed (v) move on a track. What happens when a car turns?

Description: Rhett Allain

What are those speed labels? It turns out that the speeds are related to our reference frame. Both cars have speed related tracks. That is, AT is the speed of the car A part of the track. How about the speed on the track? That is measured in relation to the reference ground frame (TG). But what we like is the speed of cars with respect to the ground. For that, we can apply the following speed change. (Here is a more detailed explanation.)


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