2) The weight of tank is 50 000 kg, area of his belts is 5 m2. What pressure acts on the ground?

To calculate the pressure acting on the ground, we need to use the formula:

Pressure = Force / Area

In this case, the force is equal to the weight of the tank, which is given as 50,000 kg. However, we need to convert this weight into Newtons, as the unit of force in the formula is Newton (N).

To convert kg to N, we can use the conversion factor that 1 kg is equal to 9.8 N (due to the acceleration due to gravity). So, the weight of the tank in Newtons would be:

Weight = 50,000 kg * 9.8 N/kg = 490,000 N

Now that we have the force, we can calculate the pressure by dividing this force by the area of the tank's belts, which is given as 5 m²:

Pressure = 490,000 N / 5 m² = 98,000 N/m²

So, the pressure acting on the ground is 98,000 N/m².