Question

A body of mass $50\text{kg}$ and area of cross-section $1m^2$ is kept on a sand floor. Calculate the pressure exerted by the body on the sand floor due to its weight. Take $g=10m/s^2$.

• A. $5\times {10}^3$ pascal
• B. $1.5\times {10}^3$ pascal
• C. $5\times {10}^2$ pascal
• D. $1.5\times {10}^2$ pascal

Answer 1

The correct option is C $5\times {10}^2$ pascal

We know that the weight of the body is nothing but the force with which the body press the ground.
So weight=force
$P=\frac{F}{A}=\frac{\text{weight}}{\text{area}}=\frac{50\times 10N}{1m^2}$
$=500N/m^2$
$=5\times {10}^2$ pascal