PSYC 301 Lecture Notes - Lecture 9: Net Force, Hubble Space Telescope, Theodolite
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If it takes t seconds to make 1 revolution: t= period of motion; f= frequency of motion. Uniform circular motion: circular path, constant speed (length of vector); but changing direction, velocity is not constant there must be acceleration (to change direction of motion) Ex: how long does it take a plane traveling at a constant speed of. 110 m/s, to fly once round a circle of radius 2850 m? v = 110 m/s r = 2850 m. In uniform circular motion, the speed is constant, but the direction of the velocity vector is not constant: direction: towards the center of the circle, an object in circular motion can never be in equilibrium, magnitude. Example: the bobsled track contains turns with radii of 33 m and 24 m. find the centripetal acceleration at each turn for a speed of 34 m/s. Example: the large blade of a helicopter rotates in a horizontal circle.
