Question

a body of dimension 10m (length)× 3m (breadth)× 5m (height) is lying on the force how it should be kept so that exerts maximum pressure on the floor?
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Answer 1

Answer:

we should keep it on its breadth

Explanation:

hope it will help you.

Answer 2

Given info : a body of dimension 10m (length) × 3m (breadth) × 5m (height) is lying on the force.

To find : how it should be kept so that exerts maximum pressure on the floor ?.

solution : pressure is the force acting on the surface per unit area.

i.e., pressure = force/area

in above case, force = weight of body (constant)

so, pressure = weight of body/area

∴ pressure ∝ 1/area

here you see, pressure is inversely proportional to area.

it means, pressure will be maximum if area is minimum.

now when will area minimum ?

we have given,

Length = 10 m, breadth = 3 m and height = 5m

here, length × breadth = 10 × 3 = 30 m²

breadth × height = 3 × 5 = 15 m²

height × length = 5 × 10 = 50 m²

we see, breadth × height = 15m² is minimum, isn't it ?

Therefore the pressure will be maximum when the face of body is breadth × height lying on the floor.