Gravitational Potential & Gravitational Potential Energy | Class 12 Physics | Ch 15: Gravitation |
Gravitational Potential & Gravitational Potential Energy | Class 12 Physics | Ch 15: Gravitation | National book Foundation | federal board #FederalBoard #ModelTownHumak #EducationalChannel #siranjumteaches #nationalbookfoundation In this Class 12 Physics Lecture on Gravitational Potential and Gravitational Potential Energy, we study how gravitational forces behave beyond Earth's surface where gravity is not constant. The familiar potential energy formula: P.E = mgh is only valid near the surface of the Earth. As we move farther away, we must use Newton’s Law of Universal Gravitation: F = G * (M * m) / r² To calculate gravitational potential energy, we define a standard reference point, usually at infinite separation. This makes gravitational potential energy negative at any finite distance due to the attractive nature of gravity. #studywithus #boardexampreparation #MatricFScPreparation #onlinelearningpakistan In this lecture, we cover: Derivation of gravitational potential energy from one point to another in space. Application of the Work and Energy Principle in a gravitational field. Calculation of average gravitational force and displacement. Approximation techniques: neglecting (Δr)² due to its very small value. Gravitational potential at Earth’s surface using: G = 6.673 × 10⁻¹¹ Nm²/kg² Mₑ = 5.98 × 10²⁴ kg Rₑ = 6.4 × 10⁶ m The lecture uses concepts from the FBISE Class 12 Physics textbook by the National Book Foundation (NBF), and is ideal for board exam preparation. Understanding gravitational potential and energy on a large scale is crucial for grasping space physics, satellite motion, and escape velocity. Subscribe to stay updated with more board-focused lectures! #GravitationalPotential #GravitationalEnergy #Class12Physics #FBISE #NBFPhysics #NewtonLaw #PhysicsLecture #GravitationChapter #BoardExamPhysics Keywords: gravitational field strength gravitational field gravitational fields gravitation gravitational field physics gravitational field (dimension) gravitational potential gravitational potential energy gravitational force gravitational force mass and weight Newton's law of universal gravitation universal law of gravitation Newton's law of gravitation gravitational potential difference gravitational redshift nonuniform gravitational fields electric field difference of magnetic and electric field Newton law of gravitation introduction of gravitation difference between electric field and b field gravitational forces conservative vector field gravitational force for kids Newton's universal law of gravitation Newton's law of gravity gravitation problems law of gravitation physics law of universal gravitation understanding universal law of gravitation how to solve gravitation problems Newton's law of gravitation example Newton's laws of motion gravitational field circular orbit circular motion circular orbits orbits circular orbital velocity circular orbit velocity orbit AP Physics 1 circular motion and gravitation gravitational constant geostationary satellite geostationary satellites altitude of geostationary satellites geostationary orbit height of geostationary satellites satellite motion geosynchronous satellite height and speed of geostationary satellite geostationary orbits geostationary satellite animation geostationary and polar satellites geostationary satellite class 11 derive the formula for gravitational force calculating the gravitational force finding the gravitational force between two balls what is the formula of gravitational force using the gravitational force formula what is the formula for gravitational potential energy why the value of g is zero at the centre explain why the value of g is zero at the centre of earth variation in the value of g with depth change in g with depth change in g variation in g due to rotation of earth variation in acceleration due to gravity with height variation in gravity due to height change in gravity with depth non-contact force variation in gravitational acceleration with altitude gravitational potential energy explained gravitational potential energy definition gravitational potential energy formula gravitational potential energy class 11 gravitational potential energy equation gravitational potential energy derivation how to calculate gravitational potential energy difference between kinetic and potential energy general gravitational potential energy formula gravitational potential energy between two masses how to derive gravitational potential energy potential energy of two masses gravitational potential energy explanation NBF Physics Class 12 Class 12 Physics Physics Physics Class 12 New Book Class 12 Physics Chapter 15 Chapter 15 Short Questions Physics 12 Base Academy Physics Class 12 Physics Tricks Class 12 Physics Gravitation Federal Board Physics
