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Energy Rate
There is a car running up a ramp of angle theta from the ground. Its mass is m and has a constant speed of v. How do I find the rate at which mechanical energy is used?
Customer support service by UserEcho
By conservation of energy, if mechanical energy is being "used up," it is being transformed into another kind of energy. Here, that is gravitational potential energy, so mechanical energy is being used at the same rate as potential energy is increasing.
Since this is U= mgh, you need to use the given quantities to find the rate that mgh is changing. [HINT: The car's mass (m) and the gravitational field (g) are not changing!]