Calculate the work required to vertically lift a column weighing 100 kg and a length of 4 m

Since the center of mass of the rod is located in the middle, we can express the work of lifting it vertically by the formula:
A = F * h / 2, where F = Ft = m * g (m is the mass of the rod (m = 100 kg), g is the acceleration of gravity (we take g = 9.8 m / s ^ 2), h is the height rod (h = 4 m).
Let’s calculate the value of the work:
A = F * h / 2 = m * g * h / 2 = 100 * 9.8 * 4/2 = 1960 J.
Answer: Work needs to be done in 1960 by J.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.