How to Calculate Work Done by a Force in Space?

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SUMMARY

The discussion centers on calculating the work done by gravity on a 1250 kg probe accelerating from 225 m/s to 227 m/s over a distance of 6750 m. The key takeaway is the application of the work-energy theorem, which states that the work done by a force is equal to the change in kinetic energy, regardless of the nature of the force. Participants emphasize that gravity should not be treated as a constant value but rather as a force acting on the probe, allowing for a straightforward energy calculation.

PREREQUISITES
  • Understanding of the work-energy theorem
  • Basic knowledge of kinetic energy calculations
  • Familiarity with Newton's laws of motion
  • Concept of gravitational force in physics
NEXT STEPS
  • Study the work-energy theorem in detail
  • Learn how to calculate kinetic energy changes
  • Explore gravitational force calculations in different environments
  • Investigate examples of work done by various forces in physics
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Students in physics, educators teaching mechanics, and anyone interested in understanding the principles of work and energy in the context of forces acting in space.

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Homework Statement


The force of gravity acts on a 1250 kg probe in outer space. It accelerates the probe from a speed of 225 m/s to 227 m/s over a distance of 6750 m. How much work does gravity do on the probe?

Iwas wondering how to approach gravity in this problem. Should I assume gravity as its value on Earth or calculate an acceleration for it based on the info given?
 
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Neither. This is a straight up energy question. You even have more data than is required for the problem.

Think about applying the work-energy theorem.
 
Forget that it's gravity …

just read it as "a force acts …" :wink:
 

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