02. A girt weighting 90 kg is standing on pencil heels, each having an area of cross-section of 1 cm'sq. An elephant weighing 3000 kg and foot area of cross-section 250 cm sq, standing on the floor. Which of the two exerts more pressure of the floor? Given g = 10 m
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The girl exerts more pressure on the force , because if the surface area decreases , pressure increases
Mathematically
Pressure =Force /Area
Force = Mass x acceleration
Force of girl = 90 x 10 =900 N
Pressure exerted by girl = 900/0.0001
9,00,00,000 Pa is exerted by girl
Elephant force = 3000 x 10 = 30,000 N
30,00/0.0025
1,20,00,000 Pa
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