Simple block tension Newton gravity problem

AI Thread Summary
The discussion centers on a physics problem involving a 4.00 kg block attached to a vertical rod by two strings while the system rotates. The tension in the upper string is given as 80N, leading to the need to determine the tension in the lower cord and the speed of the block. A participant calculated the vertical component of the upward tension to be 64N but expressed uncertainty about the next steps. The suggestion to draw a free body diagram (FBD) is made to help visualize the forces acting on the block. Understanding the forces and their components is essential for solving the problem accurately.
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The 4.00kg block in the figure 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 and the tension in the upper string is 80N.

A: What is the tension in the lower cord?
B: what is the speed of the block?

FIGURE:
the straight line is the pole. the two angled likes are the strings. each string is 1.25m. the block is 4kg. the distance between the strings on the pole is 2m.
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| block
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I drew a horizontal line from the block to the pole and was able to find the angle. this allowed me to find the vertical component of upward tension = 64N. after that i don't know where to go.
 
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If a FBD is drawn with the forces acting, then one can give some help.
 

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