Tom has a mass of 73 . 9 kg and Sally has a mass of 59 . 8 kg. Tom and Sally are standing 27 . 9 m apart on a massless dance floor. Sally looks up and she sees Tom. She feels an attraction. If the attraction is gravitation, find its mag- nitude. Assume both can be replaced by spherical masses and that the gravitational constant is 6 . 67259 × 10 ^− 11 N · m^ 2 / kg^ 2 . Answer in units of N.