Truck Incline FBD: Check My Answers and Identify External Forces

[dlee45]

Homework Statement

I want to know if I drew this free body diagram correctly.

Information about the problem:
1:The truck has a load which is the black park as it goes up the incline. It doesn't have a load when it goes down the hill.
2:The truck is rear wheel driven.
3:The truck has regenerative breaking used when it goes back down the hill.
4:The wheels do not slip.
5: This assignment is just identifying only the external forces on the truck.

Homework Equations

1: Did I draw the Force going uphill in the right area? I put it on the rear wheel since it's rear wheel drive. However, I feel like it just might go in front of the car.
2: The front breaks have regenerative breaking when the car is going downhill. What type of force is acting on the front wheel? And how does it effect the rest of the car ?
3: And in general did I draw all the forces correctly?

The Attempt at a Solution

 

[NateD]

1: Yes, the force going uphill should be placed on the rear wheel since it is rear-wheel drive. The force of the motor will be distributed to both the rear and front wheels, but the majority of the power will be transferred to the rear wheel for better traction.2: The regenerative breaking used when going downhill acts as a resistive force that helps to slow down the truck by converting kinetic energy into electrical energy. This force will act on both the rear and front wheels, but will mainly be felt at the front wheels since they are closer to the motor and have more contact with the ground. 3: Yes, you have drawn all the external forces correctly.