Kithri is carrying a wooden board across a construction site…
Kithri is carrying a wooden board across a construction site when she decides to rest for a minute. She places one end of the 2.8-m-long, 15 kg board on a nearby fence post while continuing to hold the board near the opposite end. If Kithri can only muster 80 N of force to lift the board, how far from the fence must she hold the board to keep it in a horizontal position?