Question

A brick delivery truck parks on a roadside scale that measures 4m by 6m. If the delivery truck weighs 6000 N, find pressure exerted by the scale on the spring below?

Answer 1

Answer

• Pressure , P = 250 Pascals

Given

• A brick delivery truck parks on a roadside scale that measures 4 m by 6 m. If the delivery truck weighs 6000 N

To Find

• Pressure exerted by the scale on the spring below

Solution

Given that dimensions of the scale in which brick delivery truck should be loaded is " 4 m × 6 m "

⇒ Area of scale , A = 4 × 6

⇒  A = 24 m²

Force or Weight exerted by truck , F = 6000 N

⇒ F = 6000 N

We know that , " Pressure  is defined as Force acting per unit area "

$\rm Pressure, P=\dfrac{Force,F}{Area,A}\\\\\implies \rm P=\dfrac{F}{A}\\\\\implies \rm P=\dfrac{6000}{24}\\\\\implies \rm P=\dfrac{1500}{6}\\\\\implies \rm P=\dfrac{250}{1}\\\\\implies \rm P=250\ N/m^2\\\\\implies \rm P=250\ Pa$

So , Pressure exerted be 250 Pascals

More Info :

• SI unit of Pressure is Pascal or N/m²
• SI unit of Force is Newton or Kg-m/s²
• SI unit of Area is m²