The motion of plants in the solar system is radius R coalesece to from a single large drop .The radius of the tatal surface energies before and after the change is

The motion of plants in the solar system is radius R coalesece to from

1.	The motion of plants in the solar system is radius R coalesece to from a single large drop .The radius of the tatal surface energies before and after the change is
Answer» mass linear momentum ANGULAR momentum energy Solution :From keples's second law a line joining we PLANE to the sun sweeps out equal arras in equal time , that is the areal speed of the plank remain constant `dA =` area of correct trangle `SAB` `= (1)/(2)(AB xx SA)` `= (1)/(2) (rd theta xx r) = (1)/(2) r^(2)dtheta` The instantanterms areal speed of the planet is `(dA)/(DT) = (1)/(2) r^(2) (d theta)/(dt) = (1)/(2) r^(2)omega,` where `omega` is angular speed. Let `j` be angular momentum of planet about sun `J = Iomega = mr^(2) omega` `(delta A)/(dt) = (J)/(2m)` From Kepler's has areal speed is constant therefore angular momentum J is constant Hence, kept's sound law is apilvalent its CONSERVATION of angular momentum.