ATMO 201 Lecture Notes - Lecture 15: Planetary Boundary Layer, Asteroid Family, Coriolis Force
4 Apr 2017
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Low on top of a low and high on top of a high does not work because they annihilate each other. Coriolis force: fake or apparent force caused by rotation, balances pgf o. Maximum at the poles and zero at the equator. Object at pole rotates quicker than an object at equator. Think back to trigonometry - sin (0) = 0 and sin (90)=1. Proportional to the wind speed -- the faster the winds; the larger the deflection due to coriolis. Centripetal (centrifugal) force: new inward (outward) acceleration of an object, centrifugal force is fake but is analogous to third law, example: the pen on a string. Its stays swinging in a circle because the string is pulling on the pen to stay in a circle motion. Friction: force that retards motion and balances centripetal force. Action of pgf and coriolis: balanced forces - net acceleration = 0, unbalanced forces - net acceleration 0.
