Question

why 6-8 eight wheels are fitted in a truck ?

Answer 1

to reduce the pressure bcoz pressure is inversely proportional to area

Answer 2

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As we know that P ∝ 1/A.

Due to large number of wheels the area of contact on the ground over which the weight of the heavy truck acts is increased.

This reduce the pressure (P ∝ 1/A) exerted by the truck on the ground.

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Thanks...✊