Main Menu Contents Grades Syllabus Course Contents >> ... >> Ch. 10: Energy >> Pendulum Timer Notes Evaluate Feedback Print @ In Pendulum Due in 1 hour, 56 minute A mass of 2.09 kg is attached to a string tied to a hook in the ceiling. The length of the string, L, is 0.8 m, and the mass is released from rest at an initial position in which the string makes an angle 0 of 45.30 with the vertical. Calculate the work (in ]) done by gravity by the time the string is in a vertical position for the first time. 12 Submit Answer Incorrect. Tries 2/7 Previous Tries Post Discussion Send Feedback