Advertisements
Advertisements
Question
The pressure P1 at the top of a dam and P2 at a depth h form the top inside water (density p) are related as :
Options
P1 > P2
P1 = P2
P1 - P2 = h ρ g
P2 - P1 = h ρ g
Advertisements
Solution
The pressure P1 at the top of a dam and P2 at a depth h form the inside water (density p) are related as : P2 - P1 = h ρ g
RELATED QUESTIONS
What is the scientific name of the 'upward force' acting on an object immersed in a liquid?
The weight of a body floating in a liquid is ........
The relative density of alcohol is 0.8. Its density is
State whether thrust is a scalar or vector?
Deduce an expression for the pressure at depth inside a liquid.
A dam has broader walls at the bottom than at the top. Explain.
- Calculate the height of a water column which will exert on its base the same pressure as the 70 cm column of mercury. Density of mercury is 13.6 g cm-3.
- Will the height of the water column in part (a) change if the cross-section of the water column is made wider?
Prove that the loss in weight of a body when immersed wholly or partially in a liquid is equal to the buoyant force (or upthrust) and this loss is because of the difference in pressure exerted by liquid on the upper and lower surfaces of the submerged part of body.
Complete the following sentence.
Mass = .................... × density
Complete the analogy.
Downward force: Weight:: Upward force offered by liquid: _____
