Weightlessness occurs when no normal force acts on a body, as in free fall, space orbit, or zero-gravity environments. Problems: muscle atrophy, bone loss, and spatial disorientation. Class 11 Physics Gravitation CBSE EXAM 2024-25
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Kepler’s second law arises from conservation of angular momentum: orbital angular momentum (L = mvr) remains constant, ensuring equal area sweep. Class 11 Physics Gravitation CBSE EXAM 2024-25
Kepler’s laws describe planetary motion: elliptical orbits, equal areas in equal times, and orbital period proportional to distance cubed. Class 11 Physics Gravitation CBSE EXAM 2024-25
Planetary motion theories include Ptolemy’s geocentric model, Copernicus’ heliocentric theory, Kepler’s elliptical orbits, and Newton’s gravitational laws. Class 11 Physics Gravitation CBSE EXAM 2024-25
Binding energy of a satellite is the energy required to separate it from Earth’s gravitational field. Class 11 Physics Gravitation CBSE EXAM 2024-25