Extra forces to consider against a runner

[wleemitch]

Our physics instructor assigned us an extra credit assignment using vPython to make an animated system. The system needs to be something to complex for us to do by hand.

Right now I'm deciding what my topic should be. I think I'd like to do something about a system involving a runner.

My question is what are all the forces that act on a system of someone running around a track. I know there is +FN, -mg, -Fdrag, -Ffriction. I'm certain there is more to consider. Would anyone like to fill me in?

 

[Danger]

Welcome to PF, Wleemitch.
I can't help you a lot, but you will have factor in the inner dynamics of the runner as well as the outer (just as you would with a car).
Things like joint efficiency, strength of various muscle groups, length of stride, tendon elasticity, foot impact characteristics and stance will all make a difference.

 

[sir-pinski]

There are a few more forces to consider when it comes to a runner on a track. One important force to include is the force of air resistance, which is also known as drag. This force acts in the opposite direction of the runner's motion and can significantly affect their speed and performance.

Another force to consider is the force of gravity, which is responsible for the runner's weight and pulling them towards the ground. This force is typically represented as -mg, where m is the mass of the runner and g is the acceleration due to gravity.

Additionally, there may be external forces acting on the runner such as wind or uneven terrain, which can impact their motion and require further consideration in your simulation.

I would also suggest looking into the role of muscles and their forces in propelling the runner forward. The contraction and relaxation of muscles play a crucial role in the movement of a runner and should be included in your system.

I hope this helps in your assignment and good luck with your project!