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The torque or the rotating force acting on a particle with respect to the origin of the reference frame is defined as
where r = the position vector of the particle, and F = the force acting on the particle. [1] can be rewritten as
since
[2] can be rewritten as
where
H shown in [4] & [5] is the angular momentum of the particle. Angular momentum is defined as the amount of the angular motion. From [4]: where t = the time, to = the initial time, and Ho = the initial angular momentum at to. From [6], the angular impulse is the accumulated effect of the torque exertion on the particle:
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© Young-Hoo Kwon, 1998- |
[1]
[2]
[3]
[4]
[5]
[6]
[7]