Calculate the period of a ball tied to a string of length 0 . 3 m making 6 . 9 r

Question

• Calculate the period of a ball tied to a string of length 0.3 m making 6.9 revolutions every second. Answer in units of s

• Calculate the speed of the ball. Answer in units of m/s

• Calculate the period of a ball tied to a string of length 0.3 m making 6.9 revolutions every second. Answer in units of s

• Calculate the speed of the ball. Answer in units of m/s

• Calculate the period of a ball tied to a string of length 0.3 m making 6.9 revolutions every second. Answer in units of s

• Calculate the speed of the ball. Answer in units of m/s

• Calculate the period of a ball tied to a string of length 0.3 m making 6.9 revolutions every second. Answer in units of s

• Calculate the speed of the ball. Answer in units of m/s

Explanation / Answer

The period of a ball in circular motion is 1/Frequency so 1/6.9=.144 seconds.

The speed is distance over time and the distance traveled in 1 second is:
6.9 revolutions times the circumference (pi*d)= 6.9*pi*0.6m= 13.01 m/s

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