PHYS 2101 Lecture : Lecture24
Document Summary
Friday, march 16, 2012: hw9 due monday march 19 at 11:59pm, of ce hours mwf 12:30-1:30, exam 3 : tuesday march 20 @ 6pm in lockett 16 (our section, exam 3 covers chapters 10-12. The gravitational attraction supplies the centripetal force necessary to keep the moon in orbit. Force on m1 due to m2: 4) a uniform sphere of matter attracts an object on the outside as if all the sphere"s mass were concentrated at its center r2 = (re + h)2. Final: escape far from earth ( ) where r ! " We want the minimum initial velocity for the rocket to escape! If the rocket just barely escapes, it will have speed v f = 0. = 10, 900m / s = 7miles / s (fast) Satellites: weather, spy, moon: last time: satellites must travel at a high speed to orbit the earth.
