Question

12. What is the period of a pendulum whose frequency 10Hz?
Ans :

13. Find the frequency of a pendulum whose time period is 0.05s.
Ans :

14. A simple pendulum oscillates 40 times in 10seconds, find the time period and frequency.
Ans :

15. An object vibrates 400 times in 2minutes, find the time period and frequency.
Ans :

Answer 1

Answer:

A-12 The time period of a particle that is vibrating at a frequency of 10hz is 0.1 second.

A-13 Frequency is the reciprocal of the period. The period is 5 seconds, so the frequency is 1/(5 s) = 0.20 Hz

A-14 Frequency is defined as the number of oscillations per unit time. Time = 4 sec. Time Period = (4/40) = 0.1 sec. Frequency = (Number of Oscillations)/ (Time taken)Frequency = (40/4) =10Hz.

A-15 2min =120sec

f=n/t =30/120 =1/4

Answer 2

Answer:

PLS MARK AS BRAINLIST

Explanation:

1) Frequency is the reciprocal of the period. The period is 5 seconds, so the frequency is 1/(5 s) = 0.20 Hz.

2) Time = 4 sec. Time Period = (4/40) = 0.1 sec. Frequency = (Number of Oscillations)/ (Time taken)Frequency = (40/4) =10Hz.

3) 2/400=0.005