Question

Briefly explain why the tyres of tractor are large and wide?

Answer 1

To reduce pressure on the ground in order to prevent wheels sinking into soft ground.

Explanation:

Large and wide tyres have a larger surface area. Pressure is inversely proportional to surface area. So for a given force the pressure will be reduced with a larger surface area.

Reducing pressure reduces the damage that the wheels do to the ground. Thus the amount that the wheels sink into the ground will be reduced. For a tractor this is useful because they are often driven over soft ground.