Question

a cube of Edge length 5 centimetre is placed inside a liquid the pressure at the centre of a cube is 12 pascals find the. force. exerted. by. the. liquid. On. this face

Answer 1

Area of face of the cube = (10cm)2 = 100 cm2= 0.01 m2

Force exerted by the liquid = Pressure � Area of the surface

= 15 Pascal x 0.01 m2 = 0.15 N

 

Thus, the force exerted on the face of cube = 0.15 N

Hope you find it useful!

Answer 2

Given that,

Length = 5 cm

Pressure = 12 pascals

We need to calculate the force exerted by the liquid on this face

Using formula of pressure

$P=\dfrac{F}{A}$

$F=PA$

Where, P = pressure

A = area of cube

Put the value into the formula

$F=12\times(0.05)^2$

$F=0.03\ N$

Hence, The force exerted by the liquid on this face is 0.03 N