The pressure on one side of a metal plate submerged horizontally in water varies directly as the depth of the water. If a plate 10 ft. below the surface has a t

Question

Im having trouble with proportions, clearly.

Answer 1

Pressure varies directly as the depth:

p = kd   where k is the constant of proportion

 

Given 625 lbs at 10 ft depth:

625 = 10k

k = 625/10

k = 62.5

 

Your equation is:

p = 62.5d

 

Now just put in the new value of d for depth and solve for p, pressure

 

p = 62.5(25)

p = 62.5(25)

p = 1562.5 lbs.