PHYSICS [1 Mark Question Answer]

School bags have broad straps to increase the area of contact between shoulders and bag, thereby decreasing the pressure on the shoulders.

Wide feet increase the surface area and thus keep the pressure reduced and prevent birds from sinking.

High rise buildings have massive weight and thus apply large force on the ground. In order to reduce the pressure exerted by them on the ground, they have a broad base.

Pillars supporting a bridge have broader bases and narraow ‘ tops to reduce pressure exerted on the ground by the enormous weight of the bridge.

Since force applied on a body is directly proportional to the pressure on a body, if the force applied on it becomes twice, the pressure on it also becomes twice.

If the force applied is doubled for the same area, the pressure will also double.

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Pascal (Pa)