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2 cards from this section. Quick, good the night before a test.
What is tractive effort?
Think about the forces acting on a moving vehicle.
Define rolling resistance.
Consider the surface and how it affects movement.
What is the main purpose of calculating tractive effort?
Think about why we need to ensure power in machinery.
True or False: Rolling resistance is unaffected by surface type.
Reflect on your understanding of how different surfaces interact with vehicles.
A bulldozer weighs 50,000 kg with a rolling resistance of 35 kg per ton and sinks 10 cm into the ground. Calculate the total tractive effort needed to move it.
Calculate rolling resistance first, then add the penetration component.
Consider a project where a truck with a gross weight of 40 tons moves on a slope. If the grade resistance is rated at 15 kg per ton, how does this affect the tractive effort calculation?
Ensure to consider both components of resistance to get the full picture.
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