A student pushes box

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

P

, which is in direct contact with box

Q

, on a smooth horizontal table. Consider the following forces acting at the same instant:

F_1

: Force of the student’s hand on box

P

F_2

: Force of box

P

on the student’s hand

F_3

: Force of box

P

on box

Q

F_4

: Force of box

Q

on box

P

Which option lists all and only the action–reaction pairs among these forces? (a)

F_2

and

F_4

only (b) Both pairs

F_1

F_2

and

F_3

F_4

(c)

F_1

and

F_2

only (d)

F_3

and

F_4

only