$\text { Find } a _ { \mathbf { N } } \text { at time } t = \frac { \pi } { 3 } \text { for the space curve } \mathbf { r } ( t ) = 4 \cos t \mathbf { i } + 4 \sin t \mathbf { j } + 5 t \mathbf { k }$
A)16
B)0
C)5
D)25
E)4

Question

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The Answer of $\text { Find } a _ { \mathbf { N } } \text { at time } t = \frac { \pi } { 3 } \text { for the space curve } \mathbf { r } ( t ) = 4 \cos t \mathbf { i } + 4 \sin t \mathbf { j } + 5 t \mathbf { k }$
A)16
B)0
C)5
D)25
E)4

A)16 B)0 C)5 D)25 E)4

A)16
B)0
C)5
D)25
E)4