Question

Udita and Kajal were standing on a railway platform. Udita observedthe tracks carefully andasked Kajal why tracks are laid on large sized wooden sleepers. Kajal explained the concept of pressure and area and satisfied her.
(i) How is the pressure on track reduced?
(ii) Give one more application depicting pressure and area relation.
(iii) What do you conclude about Uditafrom here?

Answer 1

Pressure is inversely proportional to the area of the surface. When area increases then pressure exerted decreases.

Base of the iron nail is made as the point because area decreases hence pressure exerted on the wall by the nail increases.