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B.A rectangular box les on acough inclined surfre he corefficient of friction between thesurfice and the box is p. Let the mass of the box be m.(a)Determine the angle of inclination 0 of the plane to the horizontal at which the box just startto alide down the plane?increased to α > B?(c)What is the force necded to be applied upwards along the plane to make the box eiti")What is the force acting on the box down the plane, if the angle of inclination of tue plane sremain stationary or just mave up with uniform speed? |
Answer» where is b part |
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