# engineering

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The 50-kg stone has a speed of v_A = 8m/s when it reaches point A.Determine the normal force it exerts on the incline when it reaches point B. Neglect friction and the stone's size.

• engineering -

That will depend upon the angle of the incline at point B. If it is inclined theta to the horizontal, the normal force will mb

M g cos theta

whether there is friction or not, and regardless of spoeed.

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