Question

Truck and buses generally have double wheels at the back. give reason

Answer 1

$Answer$

▶Buses and trucks have double wheels at the back because, they carry heavy load in the back part of them.

▶Suppose the vehicle has single wheels, while carrying the heavy load, it may break down because of the weight.

▶To prevent this, buses and trucks are given double wheels at the back.

Answer 2

Trucks and buses generally have double wheels at the back to increase the area of contact on which their weights acts and hence reduces the pressure on the ground