A brick of length `L` is placed on the horizontal floor. The bricks of same length and size are placed on this brick, one above the other by providing a margin of `(L)/(8)` from the edge of the brick placed just below, in the same direction.
Find the correct option.

Options

A. Fifth brick will fall down
B. Sixth brick alone will fall down
C. Sixth brick along with fifth brick will fall down
D. Fifth brick along with fourth brick will fall down.

Answer

C

Explanation

( c) As shown in the diagram fifth brick is in limiting equilibrium, So, when sixth brick is placed over the fifth brick, both will fall down as fifth brick is in limiting equilibrium.
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