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Why can a car so easily pass a loaded truck when going uphill? The truck is heavier, of course, but its engine is more powerful in proportion (or is it). What considerations enter into choosing the design power of a truck engine and of a car engine?

Why can a car so easily pass a loaded truck when going uphill? The truck is heavier, of course, but its engine is more powerful in proportion (or is it). What considerations enter into choosing the design power of a truck engine and of a car engine?

Grade:11

1 Answers

Kevin Nash
askIITians Faculty 332 Points
8 years ago
In going up-hill by an object, energy is required. The amount of energy depends on the mass of the object. Thus, the object having heavier mass required more energy to move uphill than the lighter one.
As the mass of the car is lesser than the mass of the loaded truck, lesser amount of energy is required by the car to move uphill. On the other hand, large amount of energy is required by the loaded truck to move uphill. Therefore, a car can easily pass a loaded truck when going uphill.
To design power of a truck engine and a car engine, the material should light to decrease the weight of the body. Therefore lesser amount of energy will be required to move the body uphill.

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