Question

What hieght of mercury will exert the same pressure as 5 m column of water? (RD of mercury=13.6)

Answer 1

Pressure = dgh

Where d = density
g = acceleration due to gravity
h = height of column


Height of water column= 5m
Density of water = 1 g/cm^3

Let Height of mercury column = h
Density of mercury = RD×density of water= 13.6×1 = 13.6 g/cm^3

They exert same pressure

Or 1×g×5 = 13.6×g×h

Or 5g = 13.6gh

Or h = 5g/13.6g

Or h = 0.368 m


Height of mercury required to exert same pressure is 0.368m

Answer 2

Answer:

0.368m

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