1.4. Total Resistance Calculation

Try these first

1. 1.

   Calculate the rolling resistance for a vehicle weighing 30 tons with a rolling resistance value of 25 kg per ton.

   Hint

   Multiply the weight by the rolling resistance value.

2. 2.

   If a tire sinks 5 cm into the surface and the load is 20 tons, calculate penetration resistance using 4 kg per ton per cm.

   Hint

   Use the formula: (load in tons) * (kg per ton per cm) * (depth in cm).

3. 3.

   What is the rolling resistance for a vehicle weighing 50 tons with a rolling resistance of 30 kg per ton?

   • 1500 kg
   • 1200 kg
   • 4000 kg

   Hint

   Think of the formula: Weight (in tons) multiplied by Resisting Force (in kg/ton).

4. 4.

   True or False: Grade resistance only applies when going downhill.

   • True
   • False

   Hint

   Consider the direction of the slope.

5. 5.

   A tractor weighing 10 tons has a rolling resistance of 40 kg/ton and is hauling a load up a 2% incline. Calculate the total resistance faced.

   Hint

   Calculate each resistance type separately, then sum.

6. 6.

   A truck with a total weight of 30 tons requires 50 kg per ton rolling resistance and operates on a 6% slope. What is the total resistance?

   Hint

   Use the standard roles of resistance: understand the slope contributes a significant fraction.