- #1
person123
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Suppose there are two discs held in contact such that they rotate around the same axis of rotation. A torque is applied to one of the discs, and due to friction the other disc accelerates. Using calculus I found the torque applied due to friction for a disc to be ##\frac {2μF_N r} {3}##, meaning the acceleration is ##\frac {4μF_N } {3mr}##.
What confuses me is that the expression doesn't include the torque applied to the first disc. Intuitively, I would think that the greater the angular acceleration of the first disc is, the greater the acceleration of the second disc would be. Is my intuition wrong, or did I make an error when solving for acceleration? Thanks in advance.
What confuses me is that the expression doesn't include the torque applied to the first disc. Intuitively, I would think that the greater the angular acceleration of the first disc is, the greater the acceleration of the second disc would be. Is my intuition wrong, or did I make an error when solving for acceleration? Thanks in advance.