A girl stands on a box having 60 cm length, 40 cm breadth and 20 cm width in three ways. In which of the following cases, pressure exerted by the brick will be
(a) maximum when length and breadth form the base
(b) maximum when breadth and width form the base
(c) maximum when width and length form the base
the same in all the above three cases

Question

A girl stands on a box having 60 cm length, 40 cm breadth and 20 cm width in three ways. In which of the following cases, pressure exerted by the brick will be
(a)	maximum when length and breadth form the base
(b)	maximum when breadth and width form the base
(c)	maximum when width and length form the base
the same in all the above three cases

Accepted Answer

Soln:

Answer is (b) maximum when breadth and width form the base
Explanation:
Surface area and pressure are inversely proportional. Pressure will be maximum when surface area is minimum hence the answer is maximum when breadth and width form the base

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