Chapter 11: Q1CP (page 418)
What is the direction of the orbital (translational) angular momentum of the comet shown in the figure relative to the Sun?

Short Answer
Direction of angular momentum is in negative Z- direction.
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Chapter 11: Q1CP (page 418)
What is the direction of the orbital (translational) angular momentum of the comet shown in the figure relative to the Sun?

Direction of angular momentum is in negative Z- direction.
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In Figure 11.96a spherical non-spinning asteroid of mass\(M\)and radius\(R\)moving with speed\({v_1}\)to the right collides with a similar non-spinning asteroid moving with speed\({v_2}\)to the left, and they stick together. The impact parameter is\(d\).Note that\({I_{sphere}} = \frac{2}{5}M{R^2}.\)

After the collision, what is the velocity \({v_{CM}}\) of the center of mass and the angular velocity \(\omega \) about the center of mass? (Note that each asteroid rotates about its own center with this same \(\omega \)).
If you did not already do problem P63 do it now. Also calculate numerically the angle through which the apparatus turns, in radians and degrees.
A barbell spins around a pivot at A its center at (Figure). The barbell consists of two small balls, each with mass at the ends of a very low mass road of length . The barbell spins clockwise with angular speed radians/s. (a) Consider the two balls separately, and calculate and (both direction and magnitude in each case). (b) Calculate (both direction and magnitude). (c) Next, consider the two balls together and calculate for the barbell. (d) What is the direction of the angular velocity ? (e) Calculate (both direction and magnitude). (f) How does compare to ? The point is the form is just a convenient way of calculating the (rotational) angular momentum of multiparticle system. In principle one can always calculate the angular momentum simply by adding up the individual angular momentum of all the particles. (g) calculate .
At a particle has angular momentum relative to location . A constant torque relative to location acts on the particle. At what is the angular momentum of the particle?
Give an example of a situation in which an object is traveling a straight line, yet has non-zero angular momentum.
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