Question

1. Choose the correct answer.
i) Consider following pair of forces of equal
magnitude and opposite directions:
(P) Gravitational forces exerted on each
other by two point masses separated
by a distance.
(Q) Couple of forces used to rotate a water
tap.
(R) Gravitational force and normal force
experienced by an object kept on a
table.
For which of these pair/pairs the two forces​

Answer 1

Answer:only P

Explanation:

B'coz Q is absolutely wrong according to given condition.

And in R the forces are cancelling each other as the object kept on table is in a state of rest!!