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A block of mass 2kg is kept inside a cube as shown. The cube is moving in vertical plane with velocity V→=5ti∧+2tj∧m/s. Block remains at rest inside the cube with respect to the cube. Force exerted by cube on the block is 13n Newton. Find n.

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answer is 2.

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Detailed Solution

Acceleration of cube=a→=5i^ +2j^m/s2 F→=mg→+F→pseudo =mg−j−ma→ =20−j−25i^ +2j^ =-10i^-24j^ ⇒F→=102+242=26N

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