Question

a boy kept two rods of same weight but of different thickness vertically on a surface of sand (figure). Which one of the two rods will go more deeper into the sand nd why?

Answer 1

rod A will go more deeper into the sand because
pressure is inversely proportional to area in contact, the more the area in contact,less is the pressure applied.Thus rodA will apply less pressure than rodB as rod A is wider and has more area in contact which will create less pressure.