Fundamentals of Physics Extended (10th Edition)

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

Chapter 8 - Potential Energy and Conservation of Energy - Problems: 2a

Answer

The gravitational force does 0 Joules of Work.

Work Step by Step

The cart starts and ends at the same height, therefore there is no displacement. Because gravity is only acting downwards the horizontal displacement is irrelevant. If no displacement is created, then no work was done.---Work=Displacement$\times$ Force Work=0m $\times$ Force Work= 0 Joules
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