Chumani and Heni are loading identical fridges onto a truck (see figure 1).Chumani lifts his fridge straight up from the ground to the bed of the truck, where as Heni slides his fridge up a rough ramp to the truck. Which of the following statement below is correct about the work done on the fridge-Earth system and why your choice of answer? (note: fridge speed negligible). (a) Chumani and Heni do the same amount of work. (b) Chumani does more work than Heni. (c) Heni does more work than Chumani. . (d) None of those statements is necessarily true because the force of friction is unknown. (e) None of those statements is necessarily true because the angle of the incline is unknown.