# Homework Help: Free body mechanics problem

1. Jul 26, 2008

### dk_ch

the acceleration of the larger block of mass M on frictionless floor of the pully system as in (fig given bmp attachment) will be
(i) 4mg/(M+17m) (ii) 4mg/(M+16m)

which answer is correct and how?

#### Attached Files:

• ###### pully-system.bmp
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Last edited: Jul 26, 2008
2. Jul 26, 2008

### cristo

Staff Emeritus
Re: mechanics

Welcome to PF. Note that you must show some work before we can help you in the homework forums: i.e. fill in parts 2 and 3 on the homework template!

3. Jul 26, 2008

### dk_ch

Re: mechanics

I tried to solve the problem using following two equations taking large and small block
respectively as freebodies

Ma = 4T ------(1)
mg-T = 4ma -------(2)

solving these two i get acceleration of the larger block a = 4mg/(M + 16m)

the answer given in the text is the other one. please provide me the right answer.

4. Jul 26, 2008

### PhanthomJay

Re: mechanics

I agree with your answer.

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