Physics

A boy weighing 60 kgf stands on a platform of dimensions 2.5 cm x 0.5 cm. What pressure in pascal does he exert?

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Given:
Thrust = Weight = 60 kgf
1 kgf = 10 N
∴ 60 kgf = 60 x 10 = 600 N
So, Thrust = 600 N

Area = 2.5 cm x 0.5 cm = 1.25 cm² = $\dfrac{\text{1.25}}{\text{10000}}$ = 0.000125 m²
Pressure =?

$\text{Pressure}= \dfrac{\text{Thrust}}{\text{Area}} \\[1em] = \dfrac{\text{600}}{\text{0.000125}} \\[1em] = 48,00,000 \text{ Pa}$

So, Pressure = 48,00,000 or 4.8 x 10⁶ Pa.

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