The total weight of a car with passengers is 30,000N. The area of contact of each of the four tyres with the ground is 0.025m2. Determine the minimum car tyre pressure

The minimum pressure car tire pressure is 300,000 Pa

Explanation:

Pressure

It's a measure of the force exerted by an object per unit surface:

Where F is the force applied on a surface area A.

We are given the total weight of a car with passengers as Ft=30,000 N and we also know the area of contact of each tire with the ground as .

The minimum pressure each tire can have is when the total weight is evenly distributed in all four tires, thus F=Ft/4=7,500 N.

Calculating the pressure:

P=300,000 Pa

The minimum pressure car tire pressure is 300,000 Pa

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