<p>You and your friend are trying without success to push a sofa that is standin

Question

<p>You and your friend are trying without success to push a sofa that is standing on four identical legs to a different location. The bottom of each leg is flat and has an area of 20 cm². Your friend suggests that you get your brother to lift one end of the couch a small distance off the floor so that the area of contact is 40 cm² instead of 80 cm². Your friend argues that this will reduce the force of friction by one half. Is your friend right?</p>

Explanation / Answer

when your brother lift one end of the couch a small distance off the floor .then there wont be any friction between surface as there is no contact between surfaces.so less force

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