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The Normal Component aN(t)a _ { \mathrm { N } } ( t )

Question 9

Multiple Choice

The normal component aN(t) a _ { \mathrm { N } } ( t ) of the acceleration of a particle moving along the curve r(t) =2tisin(t) j+cos(t) k\mathbf { r } ( t ) = 2 t \mathbf { i } - \sin ( t ) \mathbf { j } + \cos ( t ) \mathbf { k } is


A) 0
B) 8t2+1\sqrt { 8 t ^ { 2 } + 1 }
C) 56\sqrt { 56 }
D) 1
E) 8t8t2+1\frac { 8 t } { \sqrt { 8 t ^ { 2 } + 1 } }

Correct Answer:

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