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lesantik [10]
3 years ago
5

1. A pendulum has a period of 3 seconds. What's its frequency? 2. A pendulum has a frequency of 0.25 Hz. What's its period? 3. A

pendulum makes 10 back and forth swings in 20 seconds. What's its period AND frequency?
Physics
2 answers:
RideAnS [48]3 years ago
6 0

Answer:

(1) 0.333 Hz

(2) 4 sec

(3) 2 sec, 0.5 Hz

Explanation:

(1) We have given time period of pendulum is 3 sec

So T = 3 sec

Frequency will be equal to f=\frac{1}{T}=\frac{1}{3}=0.333Hz

(2) Frequency of the pendulum is given f = 0.25 Hz

Time period is equal to T=\frac{1}{f}=\frac{1}{0.25}=4sec

(3) It is given that a pendulum makes 10 back and forth swings in 20 seconds

So time taken to complete 1 back and forth swings = =\frac{20}{10}=2sec

So time period T = 2 sec

Frequency will be equal to f=\frac{1}{T}=\frac{1}{2}=0.5Hz

andre [41]3 years ago
6 0

Answer:

(1) 0.33 Hz

(2) 4 s

(3) 2 s, 0.5 Hz

Explanation:

The relation between frequency and time period is given as

f=\frac{1}{T}

(1) Given a pendulum has a period, T = 3 s.

So,  f=\frac{1}{3s}

f = 0.333 Hz.

Thus, frequency of pendulum is 0.33 Hz.

(2) Given a pendulum has a frequency, f = 0.25 Hz.

So, T=\frac{1}{0.25 Hz}

T = 4 s.

Thus , period of pendulum is 4 s.

(3) Frequency is measured in cycles/second.

Given a pendulum makes 10 back and forth swings in 20 seconds.

So,f=\frac{10 cycles}{20s}

f = 0.5 Hz

Time period,  

T=\frac{1}{0.5}

T = 2 s.

Thus, period and frequency of pendulum are 2 s and 0. 5 Hz respectively.  

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