Question

Trucks meant to carry heavy loads have eight tyres instead of four. can you say why

Answer 1

the body of truck is huge and hence needs to overcome more friction as compared to cars and four wheelers and to reduce it 8 tyres are inserted

Answer 2

Trucks carrying heavy loads use eight tires to reduce the pressure on its tyres. As the surface area increases the force/load is spread over a larger area and hence reducing the pressure. This reduction in pressure allows the truck to move better and also protects the tyres from excessive wear and tear.

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