1. The problem statement, all variables and given/known data A 100 g bead is free to slide along an 80 cm long piece of string ABC. The ends of the string are attached to a vertical pole at A and C, which are 40 cm apart. When the pole is rotated about its axis, AB becomes horizontal. (a) Find the tension in the string. (b) Find the speed of the bead at B. 2. Relevant equations 3. The attempt at a solution I am just wondering how to find the length of AB and BC without knowing any of the angles of the triangle besides the right angle one. can anyone help me figure that out?