NATS 1945 Lecture Notes - Lecture 3: Centrifugal Force, G-Force, Iphone 3Gs

• School: York University
• Department: Natural Science
• Course: NATS 1945
• Professor: Robin Metcalfe

Document Summary

G-fo(cid:396)(cid:272)e: a(cid:272)(cid:272)ele(cid:396)atio(cid:374) e(cid:454)p(cid:396)essed as a (cid:373)ultiple of g"s (cid:894)e. g. , the spa(cid:272)e shuttle attai(cid:374)s a g- fo(cid:396)(cid:272)e of (cid:1007)g"s(cid:895) The precise definition of g-fo(cid:396)(cid:272)e is that it is a(cid:374) o(cid:271)je(cid:272)t"s acceleration expressed as a (cid:373)ultiple of g"s, (cid:373)ea(cid:374)i(cid:374)g as a (cid:373)ultiple of (cid:1013). (cid:1012)(cid:373)2/s. For example, if a rocket has a g-force of (cid:1007) g"s the(cid:374) it is a(cid:272)(cid:272)ele(cid:396)ati(cid:374)g at a (cid:396)ate of (cid:1007) ti(cid:373)es (cid:1013). (cid:1012)(cid:373)2s. The g-force is a measure of acceleration. However, jet pilots and astronauts who frequently experience a(cid:272)(cid:272)ele(cid:396)atio(cid:374) of (cid:373)ultiple g"s, the(cid:455) use the te(cid:396)(cid:373) gf to des(cid:272)(cid:396)i(cid:271)e ho(cid:449) the feel when they experience these accelerations. What they feel is a pull that works in the opposite direction of the force that is driving their plane or rocket. We feel this kind of pull frequently, but to a lesser extent, when in a car and are making a sharp turn, you may feel pulled in the direction opposite to the turn.