Question

A cube of wood exerts a pressure of 2 pa. When it is placed on a floor. What is the force by the cube if its surface is 5 cm²​

Answer 1

Pressure exerted by the wooden cube = 2 Pa

Surface area of cube = 5 cm² = 0.0005 m²

Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

Formula of Pressure:

`\boxed{ \bf{P = (F)/(A)}}`

P → Pressure

F → Force

A → Surface Area

By substituting values in the formula, we get:

`\rm \longrightarrow 2 = (F)/(0.0005) \\ \\ \rm \longrightarrow F = 2 * 0.0005 \\ \\ \rm \longrightarrow F = 0.001 \: N \\ \\ \rm \longrightarrow F = 1 \: mN`

`\therefore` Force applied by the cube on the floor = 1 mN