1.

A horizontal force of 10 N is necessary to just holda block stationary against a wall. The coefficient offriction between the block and the wall is 0.2. Theweight of the block is-(1) 20 N(2) 50 N(3) 100 NN(4)2 NAIEEE 2003]ON

Answer»

horizontal force on body = normal reaction force = 10 N

so frictional force = 10 x 0.2 = 2N which just counteracts the weight of the body therefore weight of the body is also 2N

you are from which school??



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