A heave uniform rod is hanging vertically form a fixed support. It is stretched by its won weight. The diameter of the rod is

Question

KollegeApply · Accepted Answer

As the rod is of uniform mass distribution and stretched by its own weight, the topmost part of the rod experiences maximum stress due to the weight of the entire rod. This stress leads to lateral strain and the rod becomes thinner. Moving down along the length of the rod, the stress decreases because the lower parts bear lesser weight of the rod. With reduced stress, the lateral strain also reduces. Hence, the diameter of the rod gradually increases from top to bottom.

AChoose Your Answer