A planet of mass ?=4.55×1024 kg is orbiting in a circular path a star of mass ?=8.55×1029 kg . The radius of the orbit is ?=1.75×107 km . What is the orbital period (in Earth days) of the planet ?planet ?
When orbit of planet is circular,the gravitational forces experienced by the planet is equal to the centripetal force
Speed =Distance /Time
In this case Time is Time Period and distance is circumference of circular orbit
Convert Radius from km to m
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