Question

a string when struck vibrates 200 times in 4 seconds.calculate the time and frequency​

Answer 1

Answer:

Explanation:

1 second = 200/4

               = 50.

               = 50 times per second  

frequency = 50hz

Answer 2

Answer:

frequenncy is 50Hz.and time is already given 4 sec. Time period is 00.02 sec..

Explanation:

$f = \frac{200}{4} \\ = 50 \: hz \\ time \: period \: = \frac{1}{f} \\ = \frac{1}{50} \\ = 0.02 \: sec$

chk this...