Question

Suppose you are standing on a horizontal floor, in a room, with one of your feet and leaning the wall of the room with the other foot. The number of action reaction pair of forces you experience is

22.
A.
1.
B.
3.
D.
4.

Answer 1

The correct answer is B. 3.

Step-by-step explanation:

When you are standing on a horizontal floor and leaning against the wall with one foot, you experience three action-reaction pairs of forces:

The force of gravity pulling you downward (your weight) is countered by the normal force exerted by the floor upward. This is the first action-reaction pair.

The normal force exerted by the wall on your leaning foot is countered by the force you exert on the wall with your foot. This is the second action-reaction pair.

Friction between your leaning foot and the wall results in a frictional force exerted by the wall on your foot, and an equal and opposite frictional force exerted by your foot on the wall. This is the third action-reaction pair.

So, you experience three action-reaction pairs of forces in this scenario.