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Two ships A and B are 10 km apart on a line running south to north. Ship A farther north is streaming west at 20 km/hr and ship B is streaming north at 20 km/hr. What is their distance of closest approach?
Updated Thu, 30 Aug 2018 03:35 pm


Figure shows a wedge P on an inclined plane of inclination \(30^o\). A block Q of mass 0.5 kg is placed on horozontal surface ab of the wedge. If the wedge is given an acceleration \(4 m/s^2\) down the plane, then calculate the normal force (in N) on the block. (Neglect the frictional forces)
Updated Tue, 28 Aug 2018 04:09 pm