(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Determine a formula for acceleration of the system shown in Fig. 4-45 if the cord has a non-negligible mass m_{c}. Specify in terms ofl_{A}andl_{B}, the length of cord from the respective masses to the pulley ( The total cord length isl=l_{A}+l_{B})

[PLAIN]http://img706.imageshack.us/img706/8575/3333v.png [Broken]

2. Relevant equations

F = ma

3. The attempt at a solution

F_{by}= F_{ax}

F_{by}= m_{B}*g

acceleration of system: a = (m_{B}*g)/m_{a}

acceleration of system with non-negligible cord

a = (m_{B}+ (m_{C}* (l_{B}/l)))*g / (m_{a}+ (m_{C}* (l_{A}/l)))

need an answer check, I can't tell if its right.

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# Homework Help: Pulley System- equation derivation

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