The car weighs 2.25 tons ( US short ton ). The student finds the dimensions of each tire's footprint on the road is 12.5 cm X 16.5 cm. In pounds per square inch (psi), what is the total pressure the car exerts upon the road?

Question

amistre64 · Answer

isnt it just Force times cross sectional area?  and i assume its distributed evenly over 4 tires

amistre64 · Answer

1 ton = 2000 pounds

1 cm = abt what .. 2.5 inches?

anonymous · Answer

So i would take the area of all 4 tires?

amistre64 · Answer

2.5 cm = abt 1 inch .. thats better lol

anonymous · Answer

2.54cm = 1in

amistre64 · Answer

hmm, i would find the force; divide by 4, and apply that to 1 tire .... then multily by 4 again just to be redundant

anonymous · Answer

that's what it was! I had to take 4500/127.84 to get PSI. I was only doing one tire, it's all 4

anonymous · Answer

thanks

amistre64 · Answer

either that, or take a cross sectional area, times 4; and apply the mg of the car

amistre64 · Answer

:)

amistre64 · Answer

.... tons is a force aint it;  either way :)  good job

anonymous · Answer

Yes :)