Question

How much pressure does a box whose sides are 1.21 m long each exert on the ground due to gravity?Assume that the box has a mass of 31.7 kg. HINT: Look at the definition of pressure - what force is doing the "pushing?" What's the area?

Answer 1

212.18 pascals

Explanation:

Given:

Side: 1.21 m

The area is:

`\begin{gathered} A=s^2=(1.21)^2= \\ A=(1.21)^2 \\ A=1.4641m^2 \end{gathered}`

Mass of the box: 31.7 kg

Force due to gravity:

`\begin{gathered} F=m\cdot g \\ F=31.7\cdot9.8 \\ F=310.66\text{ N} \end{gathered}`

The pressure would be:

`\begin{gathered} p=(F)/(A)=(310.66)/(1.4641) \\ p=212.18\text{ Pa} \end{gathered}`

The pressure is 212.18 pascals