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Questions and Answers
What is the thrust experienced per unit area of the surface of a liquid at rest called?
What is the thrust experienced per unit area of the surface of a liquid at rest called?
Pressure
According to Pascal’s Law, what happens to the pressure applied to an enclosed liquid?
According to Pascal’s Law, what happens to the pressure applied to an enclosed liquid?
Transmitted undiminished to every portion of the liquid and the walls of the containing vessel.
What law does the hydraulic system work on?
What law does the hydraulic system work on?
Pascal’s Law
What is the pressure in a liquid at a depth 'h' from its free surface given by, in terms of atmospheric pressure (Pa), depth (h), density (p), and acceleration due to gravity (g)?
What is the pressure in a liquid at a depth 'h' from its free surface given by, in terms of atmospheric pressure (Pa), depth (h), density (p), and acceleration due to gravity (g)?
What does a column of height 'h' of a liquid of density 'p' exert?
What does a column of height 'h' of a liquid of density 'p' exert?
What are the main concepts of concern in the chapter on Mechanical Properties of Solids?
What are the main concepts of concern in the chapter on Mechanical Properties of Solids?
Why is a force needed to change the shape of a solid?
Why is a force needed to change the shape of a solid?
What is the importance of making notes while studying each topic thoroughly?
What is the importance of making notes while studying each topic thoroughly?
What are the resources provided by BYJU’S to help students with their exam preparations?
What are the resources provided by BYJU’S to help students with their exam preparations?
What is the aim of the experienced faculty in drafting the NCERT Solutions according to the latest CBSE Syllabus?
What is the aim of the experienced faculty in drafting the NCERT Solutions according to the latest CBSE Syllabus?
Study Notes
- Fluids are substances that can flow, including liquids and gases, and do not possess a definite shape.
- When an object is submerged in a fluid at rest, the fluid exerts a force on its surface, which is called thrust.
- The pressure exerted per unit area of a fluid's surface at rest is called pressure.
- Pressure in a fluid is the same at the same horizontal level and acts perpendicularly to the surface.
- Pressure at a point in a liquid depends on the depth below the surface, density, and acceleration due to gravity.
- According to Pascal's Law, the pressure applied to an enclosed liquid is transmitted undiminished to every portion of the liquid and the walls of the containing vessel.
- Hydraulic systems operate on Pascal's Law, with the force exerted to area ratio being constant at all cross-sections.
- The pressure in a fluid column of height h and density p is given by the relation P = Pa + hρg, where Pa is the atmospheric pressure.
- This relation is only valid for incompressible fluids.
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