Four bricks are to be stacked at the edge of a table, each brick overhanging the

Question

Four bricks are to be stacked at the edge of a table, each brick overhanging the one below it, so that the top brick extends as far as possible beyond the edge of the table (Figure 1). Is the construction in stable equilibrium if the successive bricks must extend no more than (starting at the top) 1/2, 1/4, 1/6, and 1/8 of the length beyond the one below, as shown in part (a) of the figure. The construction is not in stable equilibrium. The construction is in stable equilibrium. Is the top brick completely beyond the base of the construction? no yes

Explanation / Answer

a) see drawing.
Number of quarter bricks extending to the left of the edge =
3.5+2.5+1.5+0.5 = 8
Number of quarter bricks extending to the left of the edge =
3.5+2.5+1.5+0.5 = 8
so it is in equilibrium

b) Yes. See diagram, it is clear that top brick is away than base brick

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