If there are two equal and opposite forces whose lines of action are parallel to each other, the resultant of these two forces is known as a couple
The torque caused by the two opposing forces Fg and −Fg causes a change in the angular momentum L in the direction of that torque.
Recognizing the presence of a couple, we replace the couple by its equivalent moment 1,250(5.16) = 6,450 N.m as shown below.
A unit vector in the direction and sense of the force can also represent it.
It also satisfies the requirement that x = -z, it just points in the opposite direction.
The transformation of velocities provides the definition relativistic velocity addition ⊕, the ordering of vectors is chosen to reflect the ordering of the ...
In addition, the area object should be additive under the addition of vectors
Spherical coordinates (r, θ, φ) as often used in mathematics: radial distance r, azimuthal angle θ, and polar angle φ. The meanings of θ and φ have been ...