Question $12$

$(1$ points$)$

$($#$027013)\{$Centripetal Force$\}$

Nancy is running around a circular track encircling the reservoir where she grew up in Boston. As she's running, which of the following is true?

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Her shoes do not need to exert any force in the radial direction to keep her moving around the circle.

Her shoes need to exert a small, radially inward force on the ground to keep her body moving along the circular track.

Her shoes need to exert a small, radially outward force on the ground to keep her body moving along the circular track.

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