Calculating Angular Velocity of a Conical Pendulum | 14.6 kg, 0.5 m length

AI Thread Summary
The discussion revolves around calculating the speed of a conical pendulum with a mass of 14.6 kg and a string length of 0.5 m, swinging at an angle of 25.5 degrees. Participants express confusion regarding the inclusion of the coefficient of static friction in the speed calculation, questioning its relevance in a pendulum scenario. Some suggest that traditional pendulums are typically modeled as having a frictionless pivot, which complicates the use of friction in this context. The original poster seeks alternative equations that do not involve friction for solving the problem. Overall, the conversation highlights the complexities of applying friction concepts to pendulum dynamics.
sirfinklstin
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Homework Statement



Consider the conical pendulum, a mass on the end of a string, with the other end of the string fixed to the ceiling. Given the proper push, this pendulum can swing in a circle at an angle theta of 25.5 degrees with respect to the vertical, maintaining the same height throughout its motion. If the mass of the pendulum M is 14.6 kg and the length of the string L is 0.5 m, what is the speed of the mass as it swings?

Homework Equations


v = (coefficient of static friction x Rg)^1/2.
R = .215 m

I am not sure how to find the coefficient of static friction here, any help is appreciated.
 
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sirfinklstin said:

Homework Statement



Consider the conical pendulum, a mass on the end of a string, with the other end of the string fixed to the ceiling. Given the proper push, this pendulum can swing in a circle at an angle theta of 25.5 degrees with respect to the vertical, maintaining the same height throughout its motion. If the mass of the pendulum M is 14.6 kg and the length of the string L is 0.5 m, what is the speed of the mass as it swings?

Homework Equations


v = (coefficient of static friction x Rg)^1/2.
R = .215 m

I am not sure how to find the coefficient of static friction here, any help is appreciated.

Why would friction be involved in a pendulum problem?
 
The friction was part of an equation in my physics book, but if you have another equation that would be great.
 
sirfinklstin said:
The friction was part of an equation in my physics book, but if you have another equation that would be great.

A friction term in a simple pendulum equation? Could you please post the equation and the description of the equation?

I believe that traditional pendulums are considered to have a frictionless pivot...

http://en.wikipedia.org/wiki/Pendulum

.
 

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