The nucleus of Halley's Comet is relatively small (15 km long, 8 km wide, and 8 km thick). It has a low 2.2 1014kg mass with an average density of about 600 kg/m3 . (The density of water is 1000 kg/m3 .) The nucleus rotates once every 52 h . When Halley's Comet is closest to the Sun, temperatures on the comet can rise to about 77C and several tons of gas and dust are emitted each second, producing the long tail that we see each time it passes the Sun. Suppose that instead of being peanut shaped, Halley's Comet was spherical with a radius of 3.8 km . Find a person's radial acceleration if he was standing on the "equator" of the rotating comet