[8:48:27 PM] Christian Ramirez: A small 0.12kg metal ball is tied to a very light (essentially massless) sting 0.80m long...
katimm[8:48:27 PM] Christian Ramirez: A small 0.12kg metal ball is tied to a very light (essentially massless) sting 0.80m long to form a pendulum that is then set swinging by releasing the ball from rest when the string makes a 45 degree angle with the vertical. Air drag and other forms of friction are negligible. What is the speed of the ball when the string passes through its vertical, and what is the tension in the string at that instant?
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