Calculating Relativistic Mass of Rotating Object

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SUMMARY

The discussion focuses on calculating the relativistic mass of a rotating object, specifically a rock tied to a string. Key variables include the circumference of the weight's path, the weight of the rock, and the revolutions per minute. The user seeks a straightforward equation to determine the centripetal force exerted by the spinning rock on the string, referencing the concept of a conical pendulum for relevant equations and diagrams. Understanding these calculations does not require advanced physics knowledge, as the user is only interested in the three specified variables.

PREREQUISITES
  • Basic understanding of centripetal force
  • Familiarity with rotational motion concepts
  • Knowledge of conical pendulum dynamics
  • Ability to interpret simple physics equations
NEXT STEPS
  • Study the equations of motion for a conical pendulum
  • Learn how to calculate centripetal force in rotating systems
  • Explore the concept of relativistic mass in physics
  • Review the relationship between angular velocity and centripetal acceleration
USEFUL FOR

This discussion is beneficial for physics students, hobbyists interested in rotational dynamics, and anyone looking to understand the principles of centripetal force in rotating systems.

Smelly Eggs
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Hi.

I need to find the mass (relativistic mass?) Of an object in rotation.

Say I have a string with a small rock tied to the end.

The relevant variables are:

A) The circumference of the weights path.

B) The weight of the rock itself.

C) The revolutions per minute that B travels around A.

Now, what is the equation needed to put these together to tell me how much 'weight' in kg the spinning rock will exert or pull on the string? Or in other words, how do we know the amount of centripetal force (In kg) the string requires to hold to the spinning rock?
 
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Yes, that's exactly what I'm talking about!

The only thing is I don't know any physics so I don't understand those equations... I just want to know where to put the 3 variables I mentioned to get the outcome I mentioned.

Don't need to know any vertical gravity components or anything like that... just the 3 I menttioned, without concern for gravity or air resistance etc.

Cammon... this should be pretty simple for you physics guys!:-p
 

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