A 75kg firefighter slides down a 2.5m fire pole from rest. It takes the firefighter 1.8s to reach the ground. If the firefighter bends his knees when he reaches the ground such that his centre of mass mives 41cm while coming to a stop, what must the normal force of the ground acting on him have been during the stopping phase of his motion?
(I thought if I just found the Force of gravity i could solve for the normal force but I think that's too simple. Basically, not sure how to approach this question.)
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