Question

The time taken by a pendulum to complete 25 vibrations is 88.0 seconds. Find the time period
of the pendulum in seconds, upto appropriate significant figures.​

Answer 1

Answer:

The above attached image has the answer

Explanation:

MARK AS BRAINLIEST

Answer 2

Answer:

The time taken by a pendulum to complete 25 vibrations is 88.0 seconds.  The time period  of the pendulum in seconds is $3.52 \ s$

Explanation:

The time required to complete one oscillation is known as the time period or the inverse of the frequency is the time period of the oscillating body.  

That is,

$Time\ period\ (T)= \frac{1}{Frequency\ (f)}$                    ...(1)

Where the frequency of oscillations of a vibrating body is the ratio of the number of oscillations of that body per second.

It can be expressed as,

$Frequency\ (f) = \frac{Number\ of\ oscillations\ (N)}{Time\ (t)}$     ...(2)

In the question, it is given that,

$N = 25$

$t = 88.0\ s$

Substituting these values into equation (1) and equation (2)

$f = \frac{25}{88} = 0.284090\ Hz$

Now

$T = \frac{1}{0.284090} = 3.52$   (Three significant figures)