Question

Ram School Bag has narrow strap so when he carried it he felt uncomfortable when he told his father his father brought a new bag with ball broad strap why was Ram feeling uncomfortable on which principle it is based

Answer 1

becoz narrow straps put more weight on his shoulder as compared to broad once

Answer 2

This is based on the principle called as pressure. Pressure = force / area. This means pressure is directly proportional to force and inversely proportional to the area. This means more the area the force acts upon , lesser is the pressure, while more force acting on less area implies more pressure as of the first case. Hence it becomes uncomfortable to carry a bag applying more pressure.