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 20N 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 to be calculated is ${2cm}^2$, and the force applied by the stick is 20N in order to kill the fly sitting in that area.
Hence, pressure(P) = $\frac{Force}{Area}$.
where, ${2cm}^2=2\times {10}^{-4}{m}^2$.
$\therefore P=\frac{20}{2\times {10}^{-4}}$
$={10}^{5}Pa$.