After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 49.0 cm. The explorer finds that the pendulum completes 99.0 full swing cycles in a time of 125 s. What is the value of the acceleration of gravity on this planet?

"12.122 m/s²" is the appropriate solution.

Explanation:

The given values in the question are:

Length,

l = 49.0 cm

or,

 =

Time taken,

Now,

As we know,

⇒  

or,

⇒  

By substituting the above given values, we get

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