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Orthogonal Curvilinear Coordinates Video Lecture | Basic Physics for IIT JAM

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FAQs on Orthogonal Curvilinear Coordinates Video Lecture - Basic Physics for IIT JAM

1. What are orthogonal curvilinear coordinates?
Ans. Orthogonal curvilinear coordinates are a system of coordinates that are curvilinear (not rectilinear) and have mutually perpendicular coordinate surfaces. In these coordinates, the distance between neighboring coordinate surfaces is constant.
2. What are the advantages of using orthogonal curvilinear coordinates?
Ans. Using orthogonal curvilinear coordinates has several advantages. Firstly, they allow for a more natural representation of physical phenomena that occur in curved spaces, such as fluid flow in a pipe or electromagnetic fields around a curved object. Secondly, they simplify the mathematical description of these phenomena by decoupling the partial differential equations. Lastly, they provide a more intuitive understanding of the behavior of physical quantities in a given system.
3. How are orthogonal curvilinear coordinates related to Cartesian coordinates?
Ans. Orthogonal curvilinear coordinates can be related to Cartesian coordinates through transformation equations. These equations express the curvilinear coordinates (e.g., spherical, cylindrical, etc.) in terms of the Cartesian coordinates (x, y, z) and vice versa. These transformations allow for the conversion of equations and vectors between coordinate systems, facilitating the analysis of physical systems in different coordinate systems.
4. What are some examples of orthogonal curvilinear coordinate systems?
Ans. Some examples of orthogonal curvilinear coordinate systems include spherical coordinates, cylindrical coordinates, and parabolic coordinates. In spherical coordinates, a point in space is defined by its radial distance, polar angle, and azimuthal angle. In cylindrical coordinates, a point is defined by its radial distance, azimuthal angle, and height. In parabolic coordinates, a point is defined by its distances to two perpendicular axes and the angle between them.
5. How are partial derivatives expressed in orthogonal curvilinear coordinates?
Ans. In orthogonal curvilinear coordinates, partial derivatives can be expressed using scale factors. These scale factors account for the varying spacing between coordinate surfaces in curvilinear coordinates and are used to convert partial derivatives in Cartesian coordinates to those in curvilinear coordinates. The scale factors are typically denoted as h₁, h₂, and h₃, and the corresponding partial derivatives are obtained by dividing the Cartesian partial derivatives by the respective scale factors.
210 videos|156 docs|94 tests
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