Calculate the work done by a girl of mass 55 kg when she runs up a flight of 40 stairs, with each stair measuring 0.15 m.
Calculate the work done by a girl of mass 55 kg when she runs up a flight of 40 stairs, with each stair measuring 0.15 m.
Calculate the work done by a girl of mass 55 kg when she runs up a flight of 40 stairs, with each stair measuring 0.15 m.