C1999M3. As shown above, a uniform disk is mounted to an axle and is free to rotate without friction. A thin uniform rod is rigidly attached to the disk. A block is attached to the end of the rod. Properties of the rod, and block are as follows.
Rod: mass =m, length =2R
Block: mass =2m
Disk: radius =R
The system is held in equilibrium with the rod at an angle θo to the vertical, as shown above, by a horizontal string of negligible mass with one end attached to the disk and the other to a wall. Determine the tension in the string in terms of m,θo, and g .