labweek11 - Amber Patel Car Lab Weight of car 3264lb FR...

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Unformatted text preview: Amber Patel Car Lab Weight of car: 3264lb FR: 1684 RR: 1580 Observation: Tire Area of Contact(in2) Weight Supported by Tire (lb) [FR: 1684/2 RR: 1580/2] Pressure Calculated (lb/in2) Pressure Measured (lb/in2) Measured pressure/ Calculated Pressure Left Front Right Front Left Rear Right Rear 32.4 32.8 30.2 30.5 842 842 790 790 25.9 25.6 26.2 26.9 25.2 25 25.6 26.2 97% 97% 97% 97% Analysis 1. If the tire had no membrane of its own then there would be no support to the sidewalls generating a pressure in the tire that is greater thus if there was no membrane there would be no pressure, 2. If the pressure exerted by a tire of the same size but higher rigidity was present then the pressure exerted by the tire would be greater as the force mg would be greater. As the Pressure= F/A and the force is greater but the area is same there would be a greater pressure exerted. 3. The owner’s manual weight could be different than actual weight of the car as the car may have something in it that the owner may not have measured when present such as personal belongings. 4. Tire treads are important as they give grip to the car in hazardous conditions. They allow the car tire to fix itself as in case of snow and rain it allows the snow or rain to pass through the tire treads giving it more grips and keeping it from sliding out. 5. The pressure in front right tire is 25.6+14.7=40.3 lb/in2 and in left is 25.9+14.7=40.6 lb/in2. 6. As the tire gauge measured the pressure related to the outside atmospheric pressure the atmospheric pressure was not added to the total pressure. Conclusion The air pressure plays an important role for safety issues as the cars safety could change if the surface area in contact increase or the force increases. As the tire exerts more pressure on the road due to the pressure applied by the air on the sidewalls of the wheel ; if the force or the pressure increased the tires may be harmed causing problems . The tire treads also play an important role for safety issues as they help give the car grip. ...
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This note was uploaded on 12/20/2011 for the course LALA 222 taught by Professor Raul during the Spring '11 term at Punjab Engineering College.

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