Fnet = (MV^2) / R

Fnet = (1000*16.67^2) / 10

Fnet = 27788.89 N

Fc = Mac

Ac = V^2 / R

Ac = 16.67^2 / 10

Ac = 27.78889 ms ^ -2

Therefore

Fc = Mac

Fc = 1000 * 27.78889

Fc = 27788.89 N

G sin Ө = v^2 / R

9.8 sin Ө = 16.67^2 / 10

9.8 sin Ө = 27.78889

sin Ө = 27.78889 / 9.8

sin Ө = 2.836