Hi there!
For this part, we can disregard the horizontal velocity because horizontal and vertical motion are INDEPENDENT.
We can used the simplified equation to solve for time:

Where:
h = height
g = acceleration due to gravity (assume g = 10 m/s²)
Plug in given values:

t ≈3.162 sec
Because,
In left image pin is not touch to the wire.
In right image pin is touch to the wire.
Hope it helps you.....
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Answer: When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance.The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
Explanation: