An escalator brings four people, whose total mass is 300 kg, 25 m up in a building. Explain wh

step 1 So let's start with the given data. So we have the mass that is equal to 300 kilograms. And then

An escalator brings four people, whose total mass is 300...

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Key Concepts

Gravitational Potential Energy

This concept refers to the energy that an object possesses due to its position in a gravitational field. As the people are raised by the escalator to a higher elevation, their gravitational potential energy increases proportionally to their mass, the acceleration due to gravity, and the height gained.

Energy Transfer

Energy transfer in this scenario involves converting energy from one form into another. The escalator's motor, usually powered by electrical energy, performs work on the people by lifting them, thereby transferring energy from its power source into gravitational potential energy in the people.

Conservation of Energy

This principle states that energy is neither created nor destroyed but only transformed from one form to another. In the context of the escalator, the electrical energy provided to the motor is converted into gravitational potential energy (and some heat due to friction), illustrating the conservation of energy during the lift process.

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