Example of Motion
of a Particle in Space
(continued)
|
7. |
The tangential component of acceleration is given by a · T = aT where a = - sin t j - cos t k and T = [ i + cos t j - sin t k ] / √2 So aT = (- sin t)( cos t) + (- cos t)(- sin t) = 0 |
|
8.
|
Finally calculate the normal component of acceleration of the particle. Recall a = aN N + aT T So | a | = √ ( aN ) 2 + ( aT ) 2 ) aN = √ ( a · a - ( aT ) 2 ) In this example aT = 0 so aN = ( - sin t j - cos t k ) · ( - sin t j - cos t k ) and aN = 1 |
|
9. |
Summary: r = t i + sin t
j +
cos t k
v = i + cos t j
- sin t k = √2 T where T = ( i + cos t j - sin t k ) / √2 a
= - sin t j - cos t k a =
(1) N where N
= [- sin t j - cos t k ] |
Copyright © 2011 Richard C. Coddington
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