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WHY INNER RINGS OF SATURN ROTATE FASTER?
ANS: WE ALL KNOW THAT SATURN HAS SO MANY RINGS.IT IS FOUND THAT INNER RINGS ROTATE FASTER THAN THE OUTER RINGS. GENERALLY THE RINGS ARE NOTHING BUT SWARMS(GROUPS) OF PARTICLES LIKE DUSTS,ROCKS (SMALLER AND BIGGER). SINCE THE INNER RINGS ARE CLOSER TO SATURN THAN THE OUTER RINGS, GRAVITY EFFECT OF SATURN  ON THE INNER RINGS WILL BE MORE THAN THAT ON THE OUTER RINGS. IN ORDER TO ESCAPE FROM GRAVITY PULL OF THE PLANET, THE INNER RINGS HAVE TO  ROTATE FASTER.( HERE ALL THE RINGS OF SATURN ARE BOUND TO ITS GRAVITY).AS THE INNER RINGS ARE CLOSER, THE ROCKY PARTICLES PRESENT IN THE INNER RINGS HAVE LESS MOMENTS OF INERTIA ,BUT THEIR ANGULAR  VELOCITIES ARE MORE.