What Output Rating (Watts) Do I Need for a Pump to Lift 8kg of Water per Minute?

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Homework Help Overview

The problem involves determining the output rating in watts for a pump that is required to lift 8 kg of water per minute through a height of 3.50 m. The context is related to concepts of work and energy in physics.

Discussion Character

  • Exploratory, Conceptual clarification

Approaches and Questions Raised

  • Participants discuss the definition of a watt as a joule per second and the relationship between work and energy. There are questions about the components involved in calculating the work done by the pump.

Discussion Status

The discussion is ongoing, with some participants providing insights into relevant concepts while others express confusion about the problem's components and seek clarification. There is no explicit consensus yet, but guidance is being offered to explore the necessary calculations.

Contextual Notes

Participants mention a lack of instruction from the teacher, which may contribute to the uncertainty in understanding the problem's requirements.

Bayley
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Homework Statement


A pump is to lift 8.00 kg of water per minute through a height of 3.50 m. What output rating (watts) should the pump motor have?


Homework Equations





The Attempt at a Solution


I have no idea how to even start.
 
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Which concept(s) do you think are involved?
 
Well think about what a Watt is. It is a J/s.
 
Well energy is measured in joules and work=fdcosΘ. So...
 
Bayley said:
Well energy is measured in joules and work=fdcosΘ. So...
Good, you're on the right lines. How much work does the pump have to do in one minute?
 
I don't know what the components are.
I'm so clueless about this because my teacher didnt have time to teach us, and he said just try and figure it out.
 
Bayley said:
I don't know what the components are.
I'm so clueless about this because my teacher didnt have time to teach us, and he said just try and figure it out.
Well, in one minute the pump lifts a mass of 8kg vertically upwards to a height of 3.50m...
 

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