A ball of mass m is suspended by a light thread attached to the hook of a car Fig 1 42 At the pre cise moment when the car began

Question

A ball of mass m is suspended by a light thread attached to the hook of a car Fig 1 42 At the pre cise moment when the car began to descend a smooth inclined plane under gravity the thread was perpendicular to the plane When the car begins to descend what angle will the thread make with the plane The angle of inclination a m

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