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Responding to an alarm, a 75 kg fireman slides down a pole to the ground floor,...

Responding to an alarm, a 75 kg fireman slides down a pole to the ground floor, 3.2 m below. The fireman starts at rest and lands with a speed of 3.5 m/s.

(a) Find the average force exerted on the fireman by the pole. N
(b) If the landing speed is half that in part (a), is the average force exerted on the fireman doubled?

yes no    


Explain.

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(c) Find the average force exerted on the fireman when the landing speed is 1.75 m/s.

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