Question

1. An empty school bus weighs ~25,000 lbs. Loading on 60 children times 80 lbs. per child adds another 4,800 lbs. The bus has four wheels, each 10 inches wide and with a contact length (the length of tire touching the road when fully inflated) of 4 inches. First calculate the total contact area of the bus, and then determine how much pressure is the bus exerting on the pavement under the wheels.

Answer 1