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

,

the pulley, object a and object b all have the same mass

The cylinder rotates without sliding

He asked for the cylinder's acceleration in m(mass),g(gravitation), r(radius) variables

2. Relevant equations

3. The attempt at a solution

Okay, so my teacher said that the frictional force oppose the line tension,

Object 1(cylinder)

[tex]\sum torque=(line tension2 . radius) - (frictionalforce . radius) = m.a[/tex]

Pulley

(line tension1-linetension2)xradius=1/2mr^{2}

Object B

Line tension1 - weight = m . a

what I don't get is why my teacher said that object a's acceleration is the total of its tangential acceleration and its linear acceleration.

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# Homework Help: Total acceleration?

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