Question

Pendulum complete 25 o oscillation in in 45 second how many oscillation it complete

Answer 1

Answer:

For 15 oscillation it takes 30 sec

For one oscillation Tme period = 30/15 = 2sec

Frequency = 1/ Time period

=1/2=0.5 Hz

Explanation:

Time period is the time needed to complete one oscillation. That means,

               Time Period = time/ no. of oscillations

                                    = 30 seconds/ 15 oscillations

                                    = 2 seconds per oscillation

               Time Period = 2 s

    2.Frequency is the number of oscillations per second. That means,

               Frequency = no. of oscillations/ time

                                  = 15 oscillations / 30 seconds

                                  = 0.5 oscillations per second

                Frequency = 0.5 Hz (hertz)

From above answers we can get below relationship,

                     Frequency = 1/Time Period

For 15 oscillation it takes 30 sec

For one oscillation Tme period = 30/15 = 2sec

Frequency = 1/ Time period

Frequency = (1/2)Sec^-1 = 0.5 Sec^-1

A simple pendulum makes 10 oscillations in 20 seconds.

time period=?

frequency=?

A pendulum makes 10 oscillations in 20 seconds.

So it makes 1 oscillation in 20/10sec.=2sec

Time period=2 sec

Frequency=1/T=1/2=0.5 Hz

∴Time period and frequency of its oscillation are 2sec and 0.5 hertz .

Hope this Answer helps you to Gain Knowledge in Physics