# Homework Help: Question in mechanics (Stuck in Section B)

1. Jul 21, 2015

### eli meril

1. The problem statement, all variables and given/known data
I solved the first section.
The second section true I think.
I solved but I want you to tell me that .
And the other sections that I do not already know how to solve them, if someone can target me?

2. Relevant equations
in the poto 2-5.
but 5 and 4 less relevant that the others .

3. The attempt at a solution
at section 2 Conservation of momentum .
I have doubts about the little mass to be considered

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2. Jul 21, 2015

### andrevdh

Hint: The bead accelerates along the "rainbow" portion.

3. Jul 21, 2015

### eli meril

It's does not help me so mach.
I do not know if you refer to the circle or do simple momentum conservation.

4. Jul 21, 2015

### eli meril

It's does not help me so mach.
I do not know if you refer to the circle or do simple momentum conservation.

5. Jul 21, 2015

### haruspex

Please post your solution and working. Use only the symbolic names given (m, M etc.); please do not substitute any numerical values.

6. Jul 22, 2015

### andrevdh

So do you need help with question number 3?
If you want to know if your answers for 1 and 2 is correct you need to post your solution here.

Last edited: Jul 22, 2015