Alex and john are loding adentical cabinates onto a truck .Alex lifts his cabinet strainght up from the ground to the bed of the truck , whereas john slides his cabinet up a rough ramp to the truck .which statement correct about the work on the cabinet- Earth system ?

Mark and David are loading adentaical cement blocks on to David's pickup truck .Mark lifts his block straight up from the ground to the truck , whereas David slides his block up a ramp contining frictionless roles .Which statement is true about the work done on the block - Earth system?