This looks like an IT role where you may have to move machines in and out of server racks.
When I worked the kitchen back in the Formula 47 days, the shortening came in 50 pound blocks that needed to be moved around and dumped into the fryers. That's what came to mind first.
Also if you were assigned to unload the trucks, standing in a walk in freezer at 0 degrees F at 5:00am, catching cases of hamburger patties and french fries off of a roller ramp and stacking them up. That was fun.
That's roughly the weight of a small child or the torsional force required to drag an average sized male on grass.
That's the weight of a Fully loaded suitcase for a flight.
I mean, it's a fraction of the linear force required to push a stalled sedan and about the necessary force to remove, maneuver, or install a car battery
Lifting 50 lbs should be a general societal requirement. Thanks McDonald's for stating the obvious.