Physics
Define the terms: (i) oscillation (ii) amplitude (iii) frequency, and (iv) time period as related to a simple pendulum
Answer
(i) Oscillation – One complete to and fro motion of the bob of pendulum is called one oscillation.
(ii) Amplitude – The maximum displacement of the bob from its mean position on either side, is called the amplitude of oscillation. It is denoted by the letter a or A and is measured in metre(m).
(iii) Frequency – The number of oscillations made in one second is called the frequency. It is denoted by f or n. Its unit is per second (s-1) or hertz (Hz).
(iv) Time period – The time taken to complete one oscillation is the time period. It is denoted by the symbol T. Its unit is in second (s).
Related Questions
Assertion (A) : A pendulum clock goes slow (i.e., the time period of oscillation increases) when it is taken to mines.
Reason (R) : This is due to increase in the value of acceleration due to gravity g.
- both A and R are true and R is the correct explanation of A
- both A and R are true and R is not the correct explanation of A
- assertion is false but reason is true
- assertion is true but reason is false
Define 'amplitude of oscillation'.
Name two factors on which the time period of a simple pendulum does not depend.
How is the time period of a simple pendulum affected, if at all, in the following situations:
(a) The length is made four times,
(b) The acceleration due to gravity is reduced to one-fourth.