why do load carrying heavy vehicles have large number of wheels
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If one puts a pin to a balloon that is inflated, it will most likely pop. That’s because pressure is inversely proportional to contact area. That is, more the surface area, less the pressure experienced by the contact patch.
On many heavy vehicles, there are more sets of wheels (and therefore, tires) as the weight that they carry can case immense pressure on the contact patch on the road. If this same vehicle, fully laden, has to go over a soft ground, the latter could cave in or form a deep rut.
So to prevent these from happening, the best way is to reduce pressure on the contact patch by increasing the number of tires.
On many heavy vehicles, there are more sets of wheels (and therefore, tires) as the weight that they carry can case immense pressure on the contact patch on the road. If this same vehicle, fully laden, has to go over a soft ground, the latter could cave in or form a deep rut.
So to prevent these from happening, the best way is to reduce pressure on the contact patch by increasing the number of tires.
Getsy1234:
hope this answer will help you
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Load carrying vehicles exerts a large amount pressure on ground due to which tyres may rupture if they are lesser in number with respect to load since pressure= force/ area. Thus incresing area by increasing number of tyres lessen the risk of mishaps
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