Question

Larry uses a lever to lift a box. Where does inefficiency occur in the lever?(1 point)
Responses

under the feet of Larry
under the feet of Larry

where Larry applies force to the bar
where Larry applies force to the bar

where the box is placed
where the box is placed

where the fulcrum touches the bar

Answer 1

where the fulcrum touches the bar

Inefficiency (energy loss) comes from friction and deformation at the pivot where the bar contacts the fulcrum, causing some input work to be turned into heat/sound instead of lifting the box.