In larry niven’s science fiction novel ringworld, a ring of material of radius 1.54 × 10^11 m rotates about a star with a rotational speed of 1.44 × 10^6 m/s. the inhabitants of this ring world experience a normal contact force ~ n. acting alone, this normal force would produce an inward acceleration of 9.77 m/s^2. additionally, the star at the center of the ring exerts a gravitational force on the ring and its inhabitants. what is the total centripetal acceleration of the inhabitants? the universal gravitational constant is 6.67259 × 10^−11 n · m2/kg2 . answer in units of m/s2.part 2: the difference between the total acceleration and the acceleration provided by the normal force is due to the gravitational attraction of the central star. ind the approximate mass of the star. answer in units of kg