Question

Calculate the area of a surface on which pressure exerted by a wooden block is
50kPa and weight of block is 50N?​

Answer 1

Hello Mate! Here is your answer:

Given,

Pressure (P) = 50 kPa

= 50000 Pa

Weight/Force (F) = 50 N

∴ P = F/A .... where 'A' is the area of surface

= 50000 = 50/A

= 50000A = 50

= A = 50/50000 m²

= A = 0.001 m²

The Area is 0.001 m².

I hope this helps.

Answer 2

Pressure, P =?
M = 50 kg
F = mass x acceleration
F = 50 x acceleration due to gravity = 50 kg x 9.8 m/s2 = 490 N
side of cube is given = 5 cm = 5 x 10-2 m
Area of the face of cube on which the force is applied is A = (5 x 10-2)2m2 = 25 x 10-4 m2
Pressure = Force/ Area = 490 N/ 25 x 10-4 m2 = 196000 N/m2 = 196000 Pa