A BLOCK OF MASS 10 KG SLIDES DOWN A ROUGH SLOPE WHICH IS INCLINED AT 45 DEGREES TO THE HORIZONTAL . THE COEFFICIENT OF SLIDING FRICTION IS 0.30. WHEN THE BLOCK HAS TO SLIDE 5M , THE WORK DONE ON THE BLOCK BY THE FORCE OF FRICTION IS NEARLY ?
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Answer:-150/√2 = -75√2
Explanation:work done by frictional force = force×displacement
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