Frequency of a wave?

  • #1

Homework Statement


Ok so im given that a pendulum swings 41.35 seconds in 20 cycles. I have to find the frequency of that pendulum


Homework Equations


i know that f=1/T where T is period b/c frequency and period are reciprocal to each other.
i also know that f = N/t where t is the time for i think 1 cycle? but i dont know N


The Attempt at a Solution


Im not given Period so i have no idea how to solve for this. Please help! and please be specific on how u got your answer. Thx
 

Answers and Replies

  • #2
648
2
Period is the time for ONE cycle.
You are given the time for 20 cycles.
Can you find the time for one?

You know the relationship between period and frequency.
 

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