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4. JN 25. A solid block of mass 2 kg is ...

4. JN 25. A solid block of mass 2 kg is resting inside a cube as shown in Fig. 7.276. The cube is moving with a velocity v = 5i +2j ms. If the coefficient of friction between the surface of cube and block is 0.2, then the force of friction between the block and cube is a. 10 N Fig. 7.276 b. 4N c. 14 N d. Zero undea hauina inclination

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