Figure 10-80 is an overhead view of a rod with length 2L and negligible mass and which lies on a frictionless surface. Two bullets, each with mass m and speed v and traveling parallel to the x axis, hit the ends of the rod simultaneously and are buried in the rod. After the collision, what are (a) the angular speed of the system and (b) the speed of the system's center of mass? (c ) What is the change in the total kinetic energy because of the collisions?

Figure 10-80 is an overhead view of a rod with length 2L and negligibl

1.	Figure 10-80 is an overhead view of a rod with length 2L and negligible mass and which lies on a frictionless surface. Two bullets, each with mass m and speed v and traveling parallel to the x axis, hit the ends of the rod simultaneously and are buried in the rod. After the collision, what are (a) the angular speed of the system and (b) the speed of the system's center of mass? (c ) What is the change in the total kinetic energy because of the collisions?
Answer» SOLUTION :(a) `omega=v//L`, (B) Zero, ( C) Zero, hence, the kinetic energy of the system is conserved.

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