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 Form 1 Physics Exam Questions and Answers on Pressure

The total weight of a car with passengers is 2500N. The area of contact of each of the FOUR tyres with the ground is #0.025m^2#. Determine the minimum car tyre pressure.

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Answer Text:
F per tyre = #2500/4# =625N
Pressure per tyre = #625/0.025#
= 25000N/#m^2#