Question

The four tires of an automobile are inflated to a gauge pressure of 2.0x10^5 Pa. Each tire has an area of 0.024m^2 in contact with the ground. Determine the weight of the automobile.

Answer 1

Weight=pressuretire*area (all four tires)

Answer 2

so i do 2.0x10^5Pa x (0.024m^2)(4)??

Answer 3

would the answer be 19200?

Answer 4

An electric motor turns a flywheel through a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel as shown in the figure below. The flywheel is a solid disk with a mass of 55.5 kg and a radius R = 0.625 m. It turns on a frictionless axle. Its pulley has much smaller mass and a radius of 0.230 m. The tension Tu in the upper (taut) segment of the belt is 149 N, and the flywheel has a clockwise angular acceleration of 1.67 rad/s2. Find the tension in the lower (slack) segment of the belt.