The pendulum is $1\mathrm{.}43$ m long and has a mass of $4\mathrm{.}10$ kg$.$ You give it a push away from vertical so that it starts swinging with a speed of $2\mathrm{.}53$ m$/$s$.$ Due to friction at the pivot point, $1\mathrm{.}00$ Joule of the pendulum s initial kinetic energy is lost as heat during the upward swing. What maximum angle will it reach, with respect to the vertical, before falling back down?