A brick is kept in three different ways on a table as shown in Fig.11.5. The pressure exerted by the brick on the table will be(a) maximum in position A (c) maximum in position C(b) maximum in position B (d) equal in all cases
Question
A brick is kept in three different ways on a table as shown in Fig.11.5. The pressure exerted by the brick on the table will be(a) maximum in position A (c) maximum in position C(b) maximum in position B (d) equal in all cases
Solution
The pressure exerted by an object is given by the formula:
Pressure = Force / Area
In this case, the force is the weight of the brick, which remains constant in all three positions. The area is the surface area of the brick that is in contact with the table, which changes depending on the position of the brick.
(a) In position A, the brick is lying flat, so it has the largest surface area in contact with the table. This means the pressure (force/area) is the smallest.
(b) In position B, the brick is on its side, so it has a medium surface area in contact with the table. This means the pressure is larger than in position A, but smaller than in position C.
(c) In position C, the brick is standing upright, so it has the smallest surface area in contact with the table. This means the pressure is the largest.
(d) The pressure is not equal in all cases, because the surface area in contact with the table changes.
So, the pressure exerted by the brick on the table will be maximum in position C.
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