Answers

2015-03-12T13:17:59+05:30
F = 400N
SURFACE AREA = 25cm^2 = 25 X 10^-4
THRUST = ?
PRESSURE = ?

THRUST = 400N(THE FORCE ACTING ON AN OBJECT PERPENDICULAR TO THE SURFACE IS CALLED THRUST.)

PRESSURE = THRUST/AREA
                P = 400/25 X 10^-4
                P = 16 X 10^4 N/M^2

NOW,
IN 2ND CASE WHEN FORCE  600N ACTING ON THE SAME SURFACE THEN THE PRESSURE :

PRESSURE = THRUST/AREA
               P  = 600/25 X 10^-4
                P = 24 X 10^4 N/M^2.

plzzzzzzzzzzz MARK AS THE BEST ANSWER..   
6 4 6
he din't wite the change in pressure
I did not understand how 25 cm^2 became25*10^-4