Figure 7.4 shows two identical particles 1 and 2, each of mass m, moving in opposite directions with same speed v along parallel lines. At a particular instant, r1 and r2 are their respective position vectors drawn from point A which is in the plane of the parallel lines . Choose the correct options:
(a) Angular momentum l1 of particle 1 about A is l1 =mvd1⊙
(b) Angular momentum l2 of particle 2 about A is l2 =mvr2⊙
(c) Total angular momentum of the system about A is l =mv(r1 + r2 )⊙
(d) Total angular momentum of the system about A is l = mv(d2 − d1)⊗
⊙represents a unit vector coming out of the page.
⊗represents a unit vector going into the page.
