Resistance during vehicle moving condition
Resistance during vehicle moving condition: The moving vehicle has to overcome the following resistances: 1. Air or wind resistance, 2. Gradient resistance, and 3. Rolling resistance. Air resistance Is the aerodynamic drag experienced by the vehicle while moving and depends upon the frontal area of the vehicle speed and the speed of the vehicle. Gradient resistance Depends u[on the weight of the vehicle and the steepness or the grade of the road. It is independent of the speed of the vehicle. Rolling resistance Is the resistance to rolling occurring due to the deformation of road and tyre and the losses occurring due to the dissipation of energy in the tyre. The factors which affect rolling resistance are mainly the inflation pressure of the tyre design. The effect of speed is rather negligible . How overcome these resistances? To overcome this high torque is required at the driving wheels when a vehicle ...