When you sit on the chair, what is the reaction force to your weight? (The downward action force

Question

A: the upward force extend by the chair on your body
B: the frictional force between the chair and the floor
C: the tension force in your muscles
D: the force of gravity

Answer 1

The correct answer is:

A: the upward force exerted by the chair on your body.

According to Newton's third law of motion, for every action, there is an equal and opposite reaction. When you sit on a chair, your body exerts a downward force due to your weight (the force of gravity acting on your mass). In response, the chair exerts an upward force on your body, which is the reaction force to your weight.