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## Homework Statement

Small object of mass m is placed on the inner surface of the conical dish which can rotate with angular speed ω.

For μ=0.3 calculate the minumum and the maximum ω such that the object is remains at rest. Solve the problem using the indicated axes x-y.

Do the following steps:

(a) Show all forces acting on the object and and the acceleration

(b) Write Newton’s second law along both axes and solve.

## Homework Equations

F=ma=m*ω

^{2}*r

## The Attempt at a Solution

I have plugged in numbers and got answers for ω

_{max}and ω

_{min}but I dont get the right answer.

I have solved it right when I choose axis the ordinary X-Y axis but I need to know how to solve with using the other axis mentioned in the problem

The right answer is

ω

_{max}=7.214 rad/s and ω

_{min}=3.405 rad/s

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