A roller-coaster track has six semicircular "dips" with different radii of curvature. The same roller-coaster cart rides through each dip at a different speed.
For the different values given for the radius of curvature R and speed v, rank the magnitude of the force of the roller-coaster track on the cart at the bottom of each dip. Rank from largest to smallest. To rank items as equivalent, overlap them.
A) R=60m v=16 m/s
B) R=15m v= 8m/s
C) R=30m v= 4m/s
D) R=45m v= 4m/s
E) R=30m v= 16 m/s
F) R= 15m v=12 m/s

Ranking the magnitude of the forces from largest to smallest is;

N₆ > N₅ > N₁ = N₂ > N₃ > N₄

Thus;

Force of gravity; F_g = Mg

Normal force = N

Centripetal Force; F_c = Mv²/r

Thus;

N = Mg + Mv²/r

A) r = 60 m and v = 16 m/s

Thus; N = 9.8M + (16²/60)M

N₁ = 14.07M

B) r = 15 m and v = 8 m/s

Thus; N = 9.8M + (8²/15)M

N₂ = 14.07M

C) r = 30 m and v = 4 m/s

Thus; N = 9.8M + (4²/30)M

N₃ = 10.33M

D) r = 45 m and v = 4 m/s

Thus; N = 9.8M + (4²/45)M

N₄ = 10.16M

E) r = 30 m and v = 16 m/s

Thus; N = 9.8M + (16²/30)M

N₅ = 18.33M

F) r = 15 m and v = 12 m/s

Thus; N = 9.8M + (12²/15)M

N₆ = 19.4M

We want to rank the magnitude of the forces from largest to lowest. Thus;

N₆ > N₅ > N₁ = N₂ > N₃ > N₄

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