A 4.00 kgkg block is attached to a vertical rod by means of two strings. When the system rotates about the axis of the rod, the strings are extended as shown in (Figure 1) and the tension in the upper string is 81.0 NN.

What is the speed of the block?

A 4.00 kg block is attached to a vertical rod by means of two strings. When the system rotates about the axis of the rod, the strings are extended as shown in (Figure 1) and the tension in the upper string is 81.0 N. Figure