Question

A boy of mass 45 kg stands on a square wooden block of 50 CM side. Calculate the pressure exerted by the boy on the block.

Answer 1

HEY BUDDY..!!!!

HERE'S THE ANSWER..

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♠️ We know Pressure is force per unit are , i.e

✔️ P = F / A

⏺️P = pressure = ?

⏺️F ( force ) = mass × Acceleration ( g )

⏺️A is area on which force is acting

✔️ A = side × side = 0.5 m × 0.5 m = { 0.25 m^2 }

✔️ F = mass × g

=> Force = 45 × 10 // g = 10 m / s^2

=> Force = 450 Newton ( N )

♠️ Now finding pressure

=> Pressure = Force / Area

=> P = 450 / 0.25

=> [ P = 1800 Kg / m^2 or 1800 Pascal ( Pa ) ] ✔️✔️

♠️ Pressure exerted by boy on box is 1800 Pa

HOPE IT HELPS..

JAI HIND..

:-)

Answer 2

P = f / a

f = m.g
f = 10 × 45
f = 450 N

a = 0.5 × 0.5
a = 0.25

p = f / a
p = 450 / 0.25
p = 1800 Pa