Can anybody do these problems, and if you can, show and explain to me exactly how you did them? The problems involve a pendulum bob of mass m that’s attached to a massless string of length l. 1. At what angle from the vertical should the bob be released so that the tension in the string at the bottom of the swing would be 1.8 times the pendulum’s weight? 2. Now, with the bob in #1 having swung through the vertical position, at what angle beyond the vertical does the string tension become exactly equal to the bob’s weight?