Question: A small drone D is recovered by a net at the end of a hanging bar. Assuming the pin at A is frictionless, what is

A small drone D is recovered by a net at the end of a hanging bar. Assuming the pin at A is frictionless, what is true about the total mechanical energy of the bar, net and drone after the drone is caught?

The total mechanical energy has increasedThe total mechanical energy has decreasedThe total mechanical energy is unchangedNot enough information is provided

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