Calculate the period of a ball tied to a string of length 0.8 m making 3 revolutions every second.
Answer in units of s.
Calculate the speed of the ball
answer in units of m/s
2007-12-16 12:31:54 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The period is 1/3 second.
The speed is ( 3 ) ( 2π ) ( .8 m ) meters per second.
2007-12-16 13:07:36 · answer #1 · answered by jgoulden 7 · 0⤊ 0⤋
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Frequency = f = 3 revolutions /s
Period = t = number of revolutions in one second = 1 / f
Period = t =1/3 =0.333 s
Period of the ball is 0.333 s
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Radius =length of string = r = o.8 m
Speed = v = rw = r*2pi/t
Speed = v = 2pi*0.8 /0.333
Speed = v = 15.08m/s
The speed of the ball is 15.08 m/s
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2007-12-16 21:10:35 · answer #2 · answered by ukmudgal 6 · 0⤊ 0⤋