calculate the period of a ball tied to a string of length 1.9 m making 1.5 revolutions every second

T = 1/f

where f is frequency = 1.5, T is period

To calculate the period of a ball tied to a string, we need to know the time it takes for the ball to complete one full revolution. In this case, we are given that the ball makes 1.5 revolutions every second.

To find the period, we can use the formula:
Period = 1 / Frequency

The frequency is the number of revolutions per second, which is given as 1.5 revolutions. So, we can substitute the values into the formula:

Period = 1 / 1.5
Period = 0.6667 seconds

Therefore, the period of the ball tied to the string is approximately 0.6667 seconds.