Calculating Max. Distance of Block on Turntable Rotating at 33 1/3 rev/min

Thread starter JJ89
Start date Jun 29, 2010
Tags

Circular Circular motion Motion

AI Thread Summary

To determine the maximum distance a brass block can be placed from the axis of a turntable rotating at 33 1/3 rev/min without sliding off, the equation mω²R ≤ µmg is used, where µ is the coefficient of friction. Rearranging this gives R ≤ µg/ω². Given µ = 0.17 and the angular velocity ω can be calculated from the rotation speed, the maximum radius R can be computed. The solution confirms that this approach is correct for finding the maximum distance. The discussion focuses on applying physics principles to solve the problem effectively.

Jun 29, 2010

JJ89

The coefficient of friction between a certain brass block and a large revolving turntable is µ = 0.17. How far from the axis of rotation can the block be placed before it slides off the turntable if it is rotating at 33 1/3 rev/min?

i was wondering was this the equation to solve this question?
m ω^2 R <= µ m g

R <= µ g / ω^2

The Attempt at a Solution

Physics news on Phys.org

Jun 29, 2010

kuruman

Science Advisor

Homework Helper

Education Advisor

Insights Author

Gold Member

Yes.

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...

View full post »

Thread 'Explain this asphalt sheen'

This problem is two parts. The first is to determine what effects are being provided by each of the elements - 1) the window panes; 2) the asphalt surface. My answer to that is The second part of the problem is exactly why you get this affect. And one more spoiler:

View full post »