when trying to figure this out, i used the formula,

T = mg sin (theta)

= (62.5)(9.8)(sin 8.2)

= 87.36N

then Fn = mg cos (theta)

=(62.5)(9.8)(cos 8.2)

= 606.2N

then the magnitude came to = 612.5N

for part B....

I used Fn = m(g+a)

= (62.5)(9.8 + .105)

=619.1N

But both of those answers are incorrect... am i going about this problem the wrong way?? any help would be appreciated.