2.2 - Outline of Today's Presentation
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Practice Questions
Test your understanding with targeted questions
Name one basic step in earthmoving operations.
💡 Hint: Think about what happens before digging.
What is haul distance?
💡 Hint: Consider how far you need to move the earth.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the economic haul distance for a bulldozer?
💡 Hint: Consider the information provided about bulldozer efficiency.
True or False: Grade resistance only occurs when moving downhill.
💡 Hint: Think about how machines perform on different slopes.
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Challenge Problems
Push your limits with advanced challenges
Calculate the total tractive effort for a bulldozer with a gross weight of 25 tons on a poorly maintained earthen road, given a rolling resistance of 75 kg/ton and a 4 cm penetration.
💡 Hint: Consider both the base rolling resistance and the additional effort due to sinking.
Design a small experiment to compare the actual power consumption of two types of earthmoving equipment over a fixed distance of 100 meters.
💡 Hint: Think about controlling variables to ensure a fair test.
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Reference links
Supplementary resources to enhance your learning experience.