1. The problem statement, all variables and given/known data A pendulum with a mass of 10kg and a length of 4.1 meters is pulled back 26 centimeters to the right from the vertical and released. As it is released, an additional amount of work equal to 5x10^-1 joules is done on the pendulum in the tangential direction toward the left. What is its period in seconds? Assuming a perfect pendulum (No more work is done on it by any force), what is the total energy of the pendulum at all times? What is the maximum distance that the pendulum can ever be from the vertical after it is released? Since there's a perfect pendulum now, does that mean I don't add that extra .5 joules to the total energy...or does that still apply? I'm pretty sure that I don't add it now but I'm not sure. Also, does that extra work affect the period? No right? Furthermore, in regards to the maximum distance, is that simply the distance where the angle of the pendulum doesn't exceed 90 degrees? Thank you very much for your help.