Question

The pressure exerted by the weight of a cubical block of side 3cm on the surface is 5 pascal. Calculate the height of the block ?

Answer 1

Answer:

0.0045N

Explanation:

Length of side of cubical box = 3cm = 0.03m

base of a cube is a square. 

Area of base(A) = 0.03m×0.03m = 0.0009 m²

The weight of the block = W

Pressure exerted = 5 Pa

⇒ Weight/Area = 5 Pa

⇒ W / 0.0009 = 5 Pa

⇒ W = 5×0.0009

⇒ W = 0.0045N

Weight of the block is 0.0045N

Answer 2

Explanation:

Here,

Side of the cube = 3cm=0.03m

Area of face of the cube, A = (0.03 ×0.03) = 0.0009m²

Pressure, P = 5Pa

We know that

Pressure = Force/Area

=> Force = pressure × Area

=> Force = 5 × 0.0009= 0.0045 N

This is the weight of the block..

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