You inflate the tires of your car to a gauge pressure of 41.0 lb/in2. If your car has a mass of 1725 kg and is supported equally by its four tires, determine the following. (a) Contact area between each tire and the road Answer ________m2 (b) Will the contact area increase, decrease, or stay the same when the gauge pressure is increased? (Choose One) increase decrease stay the same (c) Gauge pressure required to give each tire a contact area of 117 cm2 Answer ________ lb/in2
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
You inflate the tires of your car to a gauge pressure of 41.0 lb/in2. If your car has a mass of 1725 kg and is supported equally by its four tires, determine the following.
Answer ________m2
(b) Will the contact area increase, decrease, or stay the same when the gauge pressure is increased?
- increase
- decrease
- stay the same
(c) Gauge pressure required to give each tire a contact area of 117 cm2
Answer ________ lb/in2
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