Question

The curves for P.E. (U) K.E. (Ek) of two particle system as shown in figure. At what points system will be bound. 

(A) Only at point D 

(B) Only at point A 

(C) At point D and A 

(D) At points A, B and C

Answer 1

Correct option: (D) At points A, B and C

Explanation:

System will bound at a point where total energy is negative.

For the given curve, at point A, B, C. PE is more than KE. Hence total energy is negative.

Hence the system will be bound at points A, B, C.