physics
posted by Edith .
Calculate the period of a ball tied to a string
of length 1.7 m making 3.6 revolutions every
second.
Answer in units of s
Calculate the speed of the ball.
Answer in units of m/

period = 1/frequency = 1/3.6 = 0.2777 s
circumference = 2pi*r = 10.7m
speed = distance/time (or, distance * frequency) = 10.7*3.6 = 38.5m/s