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Thrust and Pressure, , 1. A brick of weight 2 N is placed on a floor. The area of side A,B,C of the, brick are 0.4m’, 0.2 m’ and 0.1 m’ respectively., , A] Find the pressure exerted by the brick when each side of the brick is in, contact with the floor., , B] If one more brick of same weight is placed above the brick mentioned in, the situation C, calculate the pressure?, , A] Pressure = Thrust / Area, P=F/A, , * When the side A comes in contact with the floor, Thrust F=2N, Area A= 0.4m, Pressure P= 2/0.4=5 N/m?=5pa, , * When the side B comes in contact with the floor, Thrust F=2N, Area A= 0.2m, Pressure P = 2/0.2 = 10 N/m? = 10 pa, , * When the side C comes in contact with the floor, Thrust F=2N, Area A= 0.1m, Pressure P = 2/0.1 = 20 N/m? = 20 pa, , B] If one more brick of same weight is placed above the brick mentioned, in the situation C, Thrust F=4N, Area A= 0.1m, Pressure P = 4/0.1 = 40 N/m? = 40 pa