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Uses of ticker tapes. Sometimes it is difficult to accurately measure the acceleration of an object.
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Uses of ticker tapes Sometimes it is difficult to accurately measure the acceleration of an object. However, it can be done using a ticker tape. A ticker tape is a narrow, long piece of paper that can be attached to an object while running through a ticker timer. The ticker-timer makes dots on the tape at regular time intervals – say 1/50 of a second. If we study the dots we can establish if the object is moving at constant velocity, constant + acceleration or constant –acceleration. (c) M & S Marketing
Ticker tapes Motion of tapes Describe the kind of motion taking place in each tape. Explain how you can deduce this from the tape. (c) M & S Marketing
Ticker tape problem 5 mm 12 mm vAB = Inst. velocity midway in time AB Direction of motion Calculating acceleration from ticker tape information. A B C D Period: T = time between successive dots f = 50 Hz T = 1/f = 1/50 = 0.02 s (c) M & S Marketing
5 mm 12 mm A B C D Ticker tape problem v1 v2 V1 = ave VAB v1 = 0,005/0,02 = 0,25 m/s V2 = ave VCD v2 = 0,012/0,02 = 0,60 m/s a = v/ t = 0,60 - 0,25/0,04 = 8,75 m/s2 (c) M & S Marketing
