The body acts on the support with a force of 200 N. what is the body weight.

F = 200 N
g = 10 m / s ^ 2
m -?
Two forces act on the body: the force of gravity and the force with which the support acts on the body. Since the body is at rest, these forces compensate for one another. Since the body acts on a support with a force F = 200 N, according to Newton’s 3 law, the support acts on a person with the same force F = m * g, m = F / g; m = 200 N / 10 m / s ^ 2 = 20 kg.
Answer: body weight m = 20 kg.