Question

In column I, some of the situations are shown and in column II, some statements are given. Match the column:


Which of the following option has the correct combination considering column-I and column-II?

• A. D$\to$Q, R
• B. C$\to$Q, R, T
• C. B$\to$P, R, S
• D. A$\to$R, S

Answer 1

The correct option is A D$\to$Q, R

A$\to$P, T; B $\to$ P, R, S, T; C $\to$ P, Q, R, T; D $\to$ Q, R

(A) Normal force of ground would change in y-direction while in x-direction no external force exist. Mechanical energy is lost because of friction.

(B) Normal force of ground would change, but it will not do any work.

(C) The force in x-direction is internal, so momentum is conserved in x-direction, net force in y-direction is zero, so momentum is conserved in y-direction.

(D) The force in x-direction is due to $q_2$ being fixed from the ground, so momentum is not conserved in x-direction, net force in y-direction is zero, so momentum is conserved in y-direction.