Question

A block with length of 1.5 m, width of 1m and height of 0.5 m and the mass of 300kg lays on the table. What is the pressure at the bottom surface of the block?

Answer 1

$pressure = \frac{force}{area} \\ force = mg = 3000newtons \\ \\ area \: = 2(lb + bh + hl)$
find area and calculate pressure.

Answer 2

Given:

• Length of the block = 1.5 m
• width of the block = 1 m
• Height of the block = 0.5 m
• Mass = 300 Kg

To Find:

• The pressure at the bottom of the surface.

Solution:

The formula to find the pressure is given by,

pressure = force/area → {equation 1}

We need to find force and area in order to find the pressure.

1. To find force.

The formula is,

Force = m×g → {equation 2}

Where "m" is the mass and "g" is the gravitational force( 9.8 N/$m^2$)

On substituting the given values in equation 2 we get,

⇒ F = 300 × 9.8  {multiplying the terms}

⇒ F = 2940 N

2. To find the area.

Area = 2 × 1 = 2 $m^2$  {multiplying the terms}

Now on substituting the value of "force" and "area" in equation 1 we get,

⇒ Pressure = 2940/2 {dividing the terms}

⇒ Pressure = 1470 N/$m^2$

∴ The pressure at the bottom surface = 1470 N/$m^2$.