(Answered) Responding to an alarm an 884 kg fireman slides down a pole

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Responding to an alarm, an 88.4 kg fireman slides down a pole to the ground floor, 4.60 m below. The fireman starts
at rest and lands with a speed of 5.74 m/s. What is the magnitude of the force exerted by the pole on the fireman?
Ignore air resistance.

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