Advertisements
Advertisements
Question
Pressure at the free surface of a water lake is P1, while at a point at depth h below its free surface is P2. (a) How are P1 and P2 related? (b)Which is more P1 or P2?
Advertisements
Solution
(a) P2 = P 1 + h ρ g ,
(b) P2 > P 1
APPEARS IN
RELATED QUESTIONS
What causes buoyant force (or upthrust) on a boat ?
Explain why an iron needle sinks in water, but a ship made of iron floats on water.
Complete the following sentence :
Pressure at a depth h in a liquid of density p is ......................
Complete the following sentence :
Pressure of a liquid at a given depth is .................. To the density of the liquid.
The S.I. unit of pressure is :
The pressure inside a liquid of density p at a depth h is :
Why is a force needed to keep a block of wood inside water?
A homogeneous block floats on water (a) partly immersed (b) completely immersed. In each case state the position of centre of buoyancy B with respect to the centre of gravity G of the block.
Figure shows the same block of wood floating in three different liquids A, B and C of densities ρ1, ρ2 and ρ3 respectively. Which of the liquid has the highest density? Give a reason for your answer.
If the buoyant force is less, the object will float.
