Question

A force of 150N acts on a surface of area 15cm^2.Calculate the thrust and pressure.

Answer 1

Thrust:
Thrust is the force acting nornally on a surface. Its SI unit is newton (N).
 

Thrust=150N
Area=15cm=0.15m

Pressure = thrust / area
= 150N/0.15m²
=1000N/m²
=1000Pa

Answer 2

The pressure exerted by the box on the table is $P=10^5\ Pa$.

Explanation:

Given that,

Force acting on the object, F = 150 N

Area of cross section of the object, $A=15\ cm^2=0.0015\ m^2$

The force acting on the object normally is called thrust. We need to find the pressure exerted by the object. It is given by the net force acting on the box per unit area. Its formula is given by :

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

$P=\dfrac{150\ N}{0.0015\ m^2}$

$P=10^5\ Pa$

So, the pressure exerted by the box on the table is $P=10^5\ Pa$.

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Pressure

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