PHYS 1052 Lecture Notes - Lecture 10: Apollo 15, Net Force
Document Summary
Kepler"s la(cid:449)s do (cid:374)ot e(cid:454)plai(cid:374) (cid:449)h(cid:455) the pla(cid:374)ets (cid:373)o(cid:448)e as the(cid:455) do. Galileo started series of experiments to understand motion. Des(cid:272)artes (cid:272)arried for(cid:449)ard galileo"s idea a(cid:374)d ga(cid:448)e (cid:272)lear des(cid:272)riptio(cid:374) of i(cid:374)ertial motion. Change in motion resulted due to collision with corpuscle. Newton made breakthrough on understanding all kinds of motion. Aristotle- rest is natural state of objects. The object in motion wants to continue moving- friction causes stopping. No continuous force is necessary for the motion. Experiment on freely falling objects: galileo said to have dropped two objects, one light, and one heavy from the top of a building. In a vacuum they fall side by side- air= resistance: during apollo 15 mission, david scott preformed a live demonstration for the tv cameras. In the universe of aristotle and ptolemy, the motion of a planet was part of a cosmic clocklike mechanism that drove all celestial motions.
