Consider the impulse diagrams as show in figure:Let velocity of A and B be V in Left and upwarddirection respectively just after penetrationFor block A plus bullet system
- I = 1 × V + 0.25× 100 - 0.25 × 200 ..... (i) I = 2 × V From (i) and (ii) V =
25
3
m/s , I =
50
3
N - S Let I1 = impulse b/w block A and particle - I1 = 0.25 × 100 - 0.25 × 200 ⇒ I1 = 25 N - S After penetration retardation of blocks a =