The physics books are stacked on each other in the sequence +1 and 2, +2 volumes 1 and 2 on a table identify the forces acting on each book and draw the free body diagram (b) Identify the forces exerted by each book on the other

Explanation

Let `m_1 , m_2 , m_3 , m_4` are the masses of +1 volume I and II and +2 volumes I & II

(a) Force on book `m_4`
(i) Downward gravitational force acting downward `(m_4 g)`
(ii) Upward normal force `(N_3) `exerted by book of mass `m_3`
(b) Force on book `m_3`
(i) Downward gravitational force `(m_3g)`
(ii) Downward force exerted by `m_4(N_4)`
(iii) Upward force exerted by `m_2 (N_2)`
(c) Force on book `m_2`
(i) Downward gravitational force `(m_2g)`
(ii) Downward force exerted by `m_3 (N_3)`
(iii) Upward force exerted by `m_1(N_1)`
(d) Force on book `m_1`
(i) Downward gravitational force exerted by Earth `(m_1g)`
(ii) Downward force exerted by `m_2 (N_2)`
(iii) Upward force exerted by the table `(N_("table"))`