Question

A box with a weight of 650 N is sitting on the ground and the bottom of the box measures 0.5m by 0.7m what is the pressure exerted by the box on the ground

Answer 1

Given:

A box with a weight of 650 N is sitting on the ground .

Dimensions of bottom surface of block

length = 0.7 m breadth = .5 m

To Find:

What is the pressure exerted by the box on the ground

Solution:

Pressure is defined as the External normal force acting on body per unit area.

Pressure is always normal to surface.

Pressure can be measured using barometers, manometers etc.

$Pressure = \frac{Normal force}{Area}$

S.I Unit of Pressure = $\frac{N}{m^{2} }$ or Pascal.

Pressure is a scalar quantity.

Normal force = 650 N

Area = .5 ×.7 =.35 $m^{2}$

$P = \frac{650}{.35} \\\\P = 1857.14 Pa$

Pressure exerted  by the block on the ground is equal to 1857.14 Pa.