Gradeability Tyre Slippage and Startability

Try to be more specific in your question. There are sooo many variables that affect your question.

Friction forces cause the vehicle to stop or start. The friction force can be calculated by multiplying the Coefficient of Friction X The Normal Force.

I know all the resistances (rolling and aerodynamic resistances), and also, the tractive effort at wheels, coming from the engine. So, using that, I can calculate the gradeability of the vehicle. But, in order to calculate startability, I need to know the acceleration of my vehicle, which would be lesser than what it would achieve on plane ground. So, I looked up in the internet, and found some formulas that don't require you to enter the value of acceleration, as, they have made certain assumptions, and named them as constants. So, I need to know how is that formula derived? and what are the assumptions.

Start by asking your instructor for help.

Then read about friction, surface area, inertia and different surface's smoothness.

Don't forget to look at how fluids affect traction.

I know all the resistances (rolling and aerodynamic resistances), and also, the tractive effort at wheels, coming from the engine. So, using that, I can calculate the gradeability of the vehicle. But, in order to calculate startability, I need to know the acceleration of my vehicle, which would be lesser than what it would achieve on plane ground. So, I looked up in the internet, and found some formulas that don't require you to enter the value of acceleration, as, they have made certain assumptions, and named them as constants. So, I need to know how is that formula derived? and what are the assumptions.

The proper engineering terms that you can't seem to find are rolling and static/starting friction, everything else is high school physics.

Gads! spring wind up and wheel hop, the bane of hot rodders of the past!!

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