Problem on block moving with some speed
A block of mass 2 kg is initially moving with speed 4m/sec at point A on a smooth inclined plane with andle 60 degrees to the horizontal. At point B on the plane (1m down the plane from point A), its speed is vb. Find vb.
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Five boxes, each having weight 100 N, are stacked up. The bottom box is the fifths from the top. What is the magnitude of the normal force upward exerted by the fourth box from the top on the third box from the top?
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