how does the water pressure on a diver changes if:
a.he moves horizontally?
b.he moves to a greater depth?
The formula for water pressure at a depth "h" is
P = ρ g h
we see that ρ, g are constants, and h is a variable. So, pressure is only a function of h. This means pressure varies as the depth h varies.
1. So, if the diver moves horizontally, the h is same, hence there is no difference in pressure.
2. If the diver moves to a greater depth, the h increases. This causes an increase in the Pressure.