I would like to know how the positive and negative signs are determined. A thoro
ID: 1787761 • Letter: I
Question
I would like to know how the positive and negative signs are determined. A thorough explanation would be great! Thanks!
3. 7/7 points | Previous Answers MI4 11.1.016 The figure below shows seven particles, each with the same magnitude of momentum lpi = 26 kg·m/s but with different directions of momentum and different positions relative to location A. The My Notes distances shown in the diagram have these values: w = 19 m, h = 29 m, and d = 28 m. Calculate the z component of angular momentum LAz for each particle (x to the right, y up, z out of the page). Make sure you give the correct sign. LAZ,1 =-754 LAZ,2 =-754 LAZ,3 =-754 LAZ,4 =-494 Las = 0 LAZ,6 = 0 LAZ,7 = 728 kg m2/s kg m2/s kg m2/s kg m2/s kg m2/s kg m2/s kg m2/s 4A (5) d .. 90° Additional Materials Section 11.1Explanation / Answer
The angular momentum is given by:
L = r x p
where r is the distance and p is the linear momentum.
The direction is given by the right hand curl rule.
If the thumb points in the positive z direction, then the sign is positive.
If the thumb points in the negative z direction, then the sign is negative.