Direct Link: http://i.imgur.com/rTZhll5.png Please accurately draw the diagrams

Question

Direct Link: http://i.imgur.com/rTZhll5.png

Please accurately draw the diagrams

The diagram below illustrates four hypothetical collisions that take place on a level, frictionless surface. The collisions are shown from a top-view perspective. All pucks are identical. If a linear or angular velocity is not specified, it is zero. If distances appear to be equal, assume that they are. For each hypothetical collision: Specify the direction of the angular momentum of the rod-puck(s) system with respect to the center of the rod both before and after the collision. If necessary, use the convention that a vector into the page is represented by the symbol and a vector out of the page is represented by the symbol Specify the direction of the linear momentum of the rod-puck(s) system, both before and after the collision. On the basis of your answers above, state whether each hypothetical collision could or could not occur. If a particular hypothetical collision could not occur, state whether it violates (1) the principle of conservation of linear momentum, (2) the principle of conservation of angular momentum, or (3) both.

Explanation / Answer

case 1:

a. Li CW - out of page Lf CCW - into page

b. pi and pf to right

c. this collision is not possible as angular momentum L is not conserved

case 2:

a. Li = Lf = 0

b. pi to right and pf =0

c. this collision is not possible as linear momentum p is not conserved

case 3:

a. Li CW - out of page Lf =0

b. pi =0 pf=0

c. this collision is not possible as angular momentum L is not conserved

case 4:

a. Li CW - out of page Lf   CCW - out of page

b. pi and pf to right

c. this collision is possible

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