Question

how much force must be applied on a blade of length 4cm and thickness of 0.1milimetrs to exert pressure of 5000000pascalls

Answer 1

Answer:

The value of force that must be applied on a blade of length 4cm and thickness of 0.1milimeters to exert a pressure of 5000000 pascals is 20N.

Explanation:

We know that,

                  $Pressure = \frac{Force}{Area}$

             ∴   $Force = Pressure\times Area$

Given that ,

             Length of the blade = 4cm = $4\times10^{-2}$ m

              Thickness of the blade = 0.1 mm = $1\times 10^{-4}$ m

            ∴ Area of the blade = $4\times 10^{-2}\times 1\times 10^{-4}=4\times 10^{-6}m^2$

Pressure = 5000000 Pa = $5\times 10^{6}$ Pa

∴ Force = $4\times 10^{-6}\times 5\times 10^6=20N$