We need to apply vector math sometimes in the calculation of the stab – McqOptions

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1.	We need to apply vector math sometimes in the calculation of the stability of equilibrium configurations. So the coordinate of the Force vector AB is A (2, 0, 2) and B (-2, 3.46, 3). It has a magnitude of 750N. Which is the best Cartesian representation of the vector AB?
A.	-557i + 482j + 139k N
B.	-557i – 482j + 139k N
C.	-557i + 482j – 139k N
D.	557i – 482j – 139k N
Answer» B. -557i – 482j + 139k N

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We need to apply vector math sometimes in the calculation of the stability of equilibrium configurations. So the coordinate of the Force vector AB is A (2, 0, 2) and B (-2, 3.46, 3). It has a magnitude of 750N. Which is the best Cartesian representation of the vector AB?
For the conditions of the stability of equilibrium configuration of the body, i.e. the body only the external forces defines the equilibrium. Because the internal forces cancels out so not to be considered.
If the body is in stability of equilibrium configuration, but it having a rotational curled ray shown in the free body diagram then:
If the resolved force for the stability of equilibrium configuration or the force which you get as the answer after solving the question is negative, then what does this implies?
Free body diagrams doesn’t play any role in making the calculations on the conditions of stability of equilibrium configuration.
Which of the following needs to zero for the stability of equilibrium configuration?
The net force of the body is zero that means the force are not being applied to the body at all and hence the body has achieved stability.
For stability of equilibrium configuration the net moment acting on the body by various forces is zero.
For stability of equilibrium configuration the net force acting on the body is zero.
WHICH_OF_THE_FOLLOWING_NEEDS_TO_ZERO_FOR_THE_STABILITY_OF_EQUILIBRIUM_CONFIGURATION??$