Question

Explain why a heavy truck is fitted with six to eight wheels

Answer 1

to reduce the pressure on tyres

Answer 2

┏─━─━─━─━∞◆∞━─━─━─━─┓ ✭✮ӇЄƦЄ ƖƧ ƳƠƲƦ ƛƝƧƜЄƦ✮✭ ┗─━─━─━─━∞◆∞━─━─━─━─┛

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...✊