Fundamentals of Physics Extended (10th Edition)

Published by Wiley
ISBN 10: 1-11823-072-8
ISBN 13: 978-1-11823-072-5

Chapter 5 - Force and Motion-I - Problems - Page 118: 29b

Answer

Up

Work Step by Step

Without the pole, the firefighter would accelerate downwards at 9.81 $m/s^2$ due to gravity. Since he is only traveling at 3 $m/s^2$, then the pole must be causing a deceleration. Therefore, the force of the pole on the man is opposite of the force of gravity on the man. Gravity pulls him down so the pole must exert a force up
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