Question

(ii) If time taken by a simple pendulum to complete 20 oscillations is 20 sec, then calculate its frequency of motion.​

Answer 1

Answer:

1.6 seconds

Explanation:

to complete 20 oscillations, what is the time period of the pendulum? Hint: Time period of a pendulum is time taken by it to complete 1 oscillation. Hence, the time period of the pendulum is 1.6 seconds

hope this helps you

Answer 2

Answer:

Simple Pendulum is a very small heavy metal bob suspended at a point from a firmly fixed support using a single strand thread so that it oscillates freely. The distance between the point of suspension and centre of bob is called the length of the pendulum.

One oscillation: One complete to and fro motion of the oscillating body is called one oscillation.

Frequency: It is the number of oscillations made by the body in one second.

Time Period: It is the time taken by a body to complete one oscillation.

Hence, the Frequency and Time period are calculated as follows.

Time period = Time taken by the pendulum/Number of oscillations made by the pendulum.

10

20

=2s

Frequency =1/Period

2

1

=0.5Hz

Hence, the Time period and frequency are 2 seconds and 0.5 Hertz respectively.