An automobile weighing 1.05 X10 4 N has weight equally distributed overits wheel

Question

An automobile weighing 1.05 X104 N has weight equally distributed overits wheels. The weight of the car causes each tire to be slightlyflattened on the bottom so that there is a surface area in contactwith the road. The gauge pressure of the air in the tire is1.97 X 105 Pa(28.565 lb/in2). Find the areaof contact, assuming that the only forces on the section of tire incontact with the road are the air pressure and the normal forceexerted by the surface of the road.
______________ cm2 An automobile weighing 1.05 X104 N has weight equally distributed overits wheels. The weight of the car causes each tire to be slightlyflattened on the bottom so that there is a surface area in contactwith the road. The gauge pressure of the air in the tire is1.97 X 105 Pa(28.565 lb/in2). Find the areaof contact, assuming that the only forces on the section of tire incontact with the road are the air pressure and the normal forceexerted by the surface of the road.
______________ cm2 An automobile weighing 1.05 X104 N has weight equally distributed overits wheels. The weight of the car causes each tire to be slightlyflattened on the bottom so that there is a surface area in contactwith the road. The gauge pressure of the air in the tire is1.97 X 105 Pa(28.565 lb/in2). Find the areaof contact, assuming that the only forces on the section of tire incontact with the road are the air pressure and the normal forceexerted by the surface of the road.
______________ cm2 An automobile weighing 1.05 X104 N has weight equally distributed overits wheels. The weight of the car causes each tire to be slightlyflattened on the bottom so that there is a surface area in contactwith the road. The gauge pressure of the air in the tire is1.97 X 105 Pa(28.565 lb/in2). Find the areaof contact, assuming that the only forces on the section of tire incontact with the road are the air pressure and the normal forceexerted by the surface of the road.
______________ cm2 An automobile weighing 1.05 X104 N has weight equally distributed overits wheels. The weight of the car causes each tire to be slightlyflattened on the bottom so that there is a surface area in contactwith the road. The gauge pressure of the air in the tire is1.97 X 105 Pa(28.565 lb/in2). Find the areaof contact, assuming that the only forces on the section of tire incontact with the road are the air pressure and the normal forceexerted by the surface of the road.
______________ cm2 An automobile weighing 1.05 X104 N has weight equally distributed overits wheels. The weight of the car causes each tire to be slightlyflattened on the bottom so that there is a surface area in contactwith the road. The gauge pressure of the air in the tire is1.97 X 105 Pa(28.565 lb/in2). Find the areaof contact, assuming that the only forces on the section of tire incontact with the road are the air pressure and the normal forceexerted by the surface of the road.
______________ cm2

Explanation / Answer

   Weight on eachtire   W   =   weightof automobile / 4                                           =   1.05* 104 / 4                                           =   2625   N    Pressure   P   =   W/ A    Area ofcontact   A   =   2625/ 1.97 * 105                                     =   1.33* 10-2   m2                                     =   133   cm2               (1m2   =   104   cm2)                                     =   133   cm2               (1m2   =   104   cm2)

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