Question

force of 1200 n acts on the surface of area 10 cm square normally what would be the thrust and pressure on the surface

Answer 1

Pressure = F/a (Force per unit area)
F = 1200n
a = 10cm² = 10/100 × 100 = 0.001
P = Fa 
→1200 × 0.001
→1.2 n/m² = 1.2pa        (pa means pascals)

Answer 2

Given force of 1200 n acts on the surface of area 10 cm square, here force is same as thrust which is equal to 1200 N, Area = 10 sq cm

We need to convert area into sq m

So 10 sq cm = 10 cm x cm = 10 cm^2

                  = 10 / 100 x 100 = 1 / 1000 m^2 = 0.001 m^2

 Pressure = Force / unit area

                = 1200 / 0.001

               = 1200 x 1000

Pressure = 12 x 10^5 Pascals