An eraser weighing 2n is pressed
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Mass of eraser applied with a force. Which is given.mg=2NF=5NU=0.4W.k.t(F-f=mg)F=mg+fWe can write f as uFWhere u is given as 0.4 and F is given as 5N. =2+uf =2+(0.4*5) =2+(2.0)F=4N.
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