3.5 - Estimating Power Requirements with a Problem Example
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Practice Questions
Test your understanding with targeted questions
Convert 25,000 kg into tons.
💡 Hint: Remember, divide by 1000.
What is rolling resistance for a vehicle weighing 30 tons with a rolling resistance of 50 kg per ton?
💡 Hint: Multiply weight in tons by the rolling resistance.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the rolling resistance for a vehicle weighing 100 tons and rolling resistance of 25 kg per ton?
💡 Hint: Multiply the weight in tons by the rate.
True or False: The only factor impacting usable power is the weight of the vehicle.
💡 Hint: Consider other aspects like grade and rolling resistance.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A construction vehicle weighing 20 tons operates on a road with a rolling resistance of 50 kg per ton and a 4% slope. Calculate the total tractive effort needed and the usable power if its max rimpull is 8000 kg.
💡 Hint: Find total resistance first, then subtract from max rimpull.
If a machine has a rolling resistance of 15 kg per ton and weighs 10 tons on a 3% incline, how much additional power is needed to tow 2000 kg uphill?
💡 Hint: Calculate both resistances to find your total effective pull.
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