A $5\mathrm{.}00\mathrm{????}\mathrm{????}$ block is released from rest on a ramp that is inclined at an angle of $60\mathrm{.}0°$ below the horizontal. The initial position of the block is a vertical distance of $2\mathrm{.}00\mathrm{????}$ above the bottom of the ramp.

How much work is done by friction when the ramp angle is $50\mathrm{.}0°?$ Express your answer with the appropriate units.