Question

A fly was sitting on a block. A man draws a circle of the area ${2cm}^2$, enclosing the fly. He then applies a force of 20 N and kills it with a flat stick. Calculate the pressure on that area.

• A. Pa
• B. Pa
• C. Pa
• D. Pa

Answer 1

The correct option is C

Pa

The area on which the pressure is calculated is ${2cm}^2$, and the force applied by the stick is 20 N in order to kill the fly sitting in that area.
So, pressure = $\frac{Force}{Area}$.

${2cm}^2$ = 2 $\times$ ${10}^{-4}$ $m^2$.

So, pressure = $\frac{20}{2\times {10}^{-4}}$ = ${10}^5$ Pa.