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Notes on Gravitation and Projectile Class 11 Physics

 đź’ŽNotes on Gravitation and Projectile Gravitation:- Kepler’s first law (law of elliptical orbit):- A planet moves round the sun in an elliptical orbit with sun situated at one of its foci. Kepler’s second law (law of areal velocities):- A planet moves round the sun in such a way that its areal velocity is constant. Kepler’s third law (law of time period):- A planet moves round the sun in such a way that the square of its period is proportional to the cube of semi major axis of its elliptical orbit.Keplers Law of Planetary Motion T2 ∝ R3 Here R is the radius of orbit. T2 = (4Ď€2/GM)R 3 Newton’s law of gravitation:- Every particle of matter in this universe attracts every other particle with a forcer which varies directly as the product of masses of two particles and inversely as the square of the distance between them. F= GMm/r2 Here, G is universal gravitational constant. G = 6.67 ´10 -11 Nm2 / kg2 Dimensional formula of G: G = Fr2/Mm =[MLT-2][L2]/[M2] = [M-1L3T-2] Acceleration due...

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