"A mass is not only inert but also heavy." Which is intended to mean that not only is a force necessary to accelerate a mass, but also that each mass in the earth's gravitional field experiences a force, the force of weight. The force of weight is to be measured here.
Especially understandable and didactic prepared experiment descriptions including protocol
Future-proof lessons: Integration of tablets in digital science lessons
Enhanced motivation of students due to the use of the intuitive measureAPP
Increase of media competence