Average weight of the elephant = 4000 N
Weight of one leg = force exerted by one leg = 4000/4 = 1000 N
Area of the sole of one foot = 0.1 m².
Pressure = \(\frac { Force }{ Area } =\frac { 1000 }{ 0.1 } \) =10000\(\frac { N }{ { m }^{ 2 } } \)=10⁴ Nm^-2
Pressure exerted by one leg of the elephant is 10,000 newton on one square metre.

Weight of the stone = 500 N
Area of contact = 25 cm²
Pressure = \(\cfrac { force }{ area } \)
= \(\cfrac { 500 }{ 25 } \)
= 20 Nm^-2 or pascal

Lack of friction between the feet and the banana peels.

i. Decreases the pressure.
ii. Increase the area of contact

Axe, nail, knife, injection needle, bullet.

Blaise pascal

To get a better grip.

Water molecules absorbed by the roots, get rised upwards to its top branches due to surface tension.

i) For giving a lower pressure on the shoulders
ii) Thus providing a larger area of contact with the shoulders.

The instruments Manometer, Bourdon gauge help to pressure of a fluid.

Friction is produced due to the geometrical dissimilarities of the surface of the bodies, which are in relative motion.

I feel hotness. When an iron nail is hammered into a wooden plank, heat is liberated due to friction.

Pascal's law

i) When a kicking force is exerted on a football at rest, it raises.
ii) When a pushing force is applied on a box at rest it moves.

i) When force is exerted on raw rice, it gets grind to form rice flour
ii) When force is exerted on an inflated balloon at different angles, the shape of the balloon gets changed.