Understanding the Units and Origin of a Velocity^2 vs. Centripetal Force Plot

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SUMMARY

The slope of a velocity squared versus centripetal force plot has units of mass per radius (m/r). This relationship is derived from the equation for centripetal force, which states that centripetal force equals mass times velocity squared divided by radius. The line passes through the origin because when the centripetal force is zero, the velocity squared must also be zero, indicating a direct proportionality between the two variables.

PREREQUISITES
  • Understanding of centripetal force and its formula
  • Familiarity with the concept of velocity squared
  • Basic knowledge of graphing and interpreting linear relationships
  • Ability to manipulate algebraic equations
NEXT STEPS
  • Study the derivation of centripetal force equations in physics
  • Learn how to graph and interpret linear relationships in physics
  • Explore the implications of slope in physical graphs
  • Investigate the significance of the origin in various types of plots
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Students studying physics, educators teaching mechanics, and anyone interested in understanding the relationship between velocity and centripetal force.

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Homework Statement


what are the units of the slope of a velocity^2 vs. centripetal force plot? and why should the line pass through the origin?

Homework Equations


The Attempt at a Solution


I'm getting m/km for units but I'm not sure what that actually means so I don't know why it should go through the origin of the graph.
 
Last edited:
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Welcome to the forum!

According first to the relevant equations we got the following:

Centripetal Force = \frac{mass * velocity^2}{radius}

By this we deduce that such a slope of velocity would lead us to be:

m =\frac{mass}{radius}

That is mainly due because we have set up the Centripetal Force to be the Y axis and the velocity square in the X one.

Hope that helped, you may try now work out the math to see why does it pass through the origin.
 
Thank you! That helped a lot. :)
 

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