Question

A force of $400N$ exerts a pressure of $20N/c{m}^2$. What is the area on which the force acts?

• A. $20m^2$
• B. $20c{m}^2$
• C. $1c{m}^2$
• D. $10c{m}^2$

Answer 1

Answer: (B)

$20c{m}^2$

The pressure is given as Force/Area.
In this case, the force is 400 N and the pressure exerted is $20N/{cm}^2$.
Therefore, $Area=\frac{Force}{Pressure}=\frac{400N}{20N/{cm}^2}=20{cm}^2$.
Hence, the area on which the force acts is $20c{m}^2$.