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SAT® Subject Test in Physics

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Difficult

Ranking Net Force on Spheres

SATPHY-YNW1LQ

The diagram below shows four orange spheres moving in circular paths at constant speeds.

The speeds are indicated by the red arrows. The radius of the circular path for each is indicated by the green arrows. The mass of each sphere is labeled inside the boundary of the sphere.

How do the spheres rank, according to the magnitudes of the net force acting on them, greatest first?

A

4, 3, 1 and 2 tie

B

3, 1 and 4 tie, 2

C

3, 2 and 4 tie, 1

D

1, 2 and 3 tie, 4

E

1, 3, 2, 4