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3 cards from this section. Quick, good the night before a test.
Calculate the rolling resistance for a machine weighing 30 tons with a rolling resistance of 25 kg per ton.
Use the formula: Total Rolling Resistance = Gross Weight × Rolling Resistance Value.
What is grade resistance for a slope of 3% for a machine weighing 10 tons?
Remember, 1% of grade equals 10 kg per ton.
What is the formula to calculate total rolling resistance?
Identify which operation reflects the relationship between weight and resistance.
True or False: Grade assistance increases the tractive effort required.
Consider the effects of gravity on moving machines.
A construction site requires a bulldozer that weighs 40 tons with a rolling resistance of 50 kg per ton. It needs to operate on a slope of 8%. Calculate the total resistance and how much power will be available if the maximum tractive effort is 6000 kg.
Follow the steps for calculating rolling and grade resistance and subtract from total power.
Evaluate how operating at a high altitude affects the usable power of a machine with otherwise specified ratings. What considerations should be made when specifying equipment for such conditions?
Reflect on how altitude could influence machine efficiency.
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