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in Laws of motion by (52.4k points)

The brakes of the car given in the figure, are released, and the car is held in place on the plane surface by the cable AB. The car’s front wheels are aligned so that the tires exert no friction forces parallel to the car’s longitudinal axis. The unit vector ep = -0.941 i + 0.131 j + 0.314 k is parallel to the plane surface and aligned with the car’s longitudinal axis. What is the tension in the cable?

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Only the cable and the car’s weight exert forces in the direction parallel to ep. Therefore

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