Question

a force of 100 N act on a surface of area 25 cm calculate thrust and pressure. calculate the change pressure is the force now is reduce to 25 N ?

Answer 1

Case I:
Thrust = Force = 100 N

Area, A = 25 cm^2
=0.0025 m^2

Pressure = Force / Area
= 100 / 0.0025
=40000 Pa

Case II:
Thrust = Force = 25 N

Area, A = 25 cm^2
=0.0025 m^2

Pressure = Force / Area
= 25 / 0.0025
=10000 Pa

Change in pressure = 40000 - 10000 = 30000 Pa