Since the movable block always gives a 2-fold gain in strength, the traction force is equal to:
P = F / 2, where P is the traction force, F = Ft (gravity) is the force acting on the body (Ft = m * g, where m is the mass of the body (m = 50 kg), g is the acceleration of gravity (we take g = 9.8 m / s ^ 2).
Let’s calculate the traction force for uniform lifting of the load:
Pd = F / 2 = m * g / 2 = 50 * 9.8 / 2 = 245 N.
Answer: The thrust force is 245 N.
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.