Question

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.

Answer 1

Explanation:

• Earth pulls boy down / boy pulls block.

• Boy exerts down force on chair / chair exerts upward force on boy ( both contact forces )

• Chair legs exert down wards force on floor / Floor exerts up wards force on chair legs. ( once more each contact forces )

• Newton 3 - Forces area unit equal and opposite, act on different bodies, should be of a similar kind.

Answer 2

Answer is in the above attachment.