Qstnid -I-2-a Boy Is Sitting On A Chair Placed On The Floor Of A Room. Write As Many Action-reaction Pairs Of Forces As You Can. - 04: The Forces

with Solutions -

#2
A boy is sitting on a chair placed on the floor of a room. Write as many action-reaction pairs of forces as you can.
Ans : The given situation involves two action-reaction pairs of forces. They are:
(a) The action force (F = mg) with which the boy pushes the chair in the downward direction and the reaction force (F' = `` -``mg) with which the chair exerts on the boy in the upward direction.
(b) The action force (F = (M + m)g) with which the boy and the chair push the ground in the downward direction and the reaction force (F' = (M + m)g) with which the ground exerts on the boy and the chair in the upward direction.