Question

An illustration of a circle with an arrowhead on the circle pointing counterclockwise. A black dot on the top right part of the circle is a dot with 4 vectors from it. Vector A away from the center of the circle, vector C toward the center of the circle, a vector tangent to the circle and clockwise labeled B and a vector labeled D tangent to the circle an in the counterclockwise direction.
Which arrow indicates the direction of centripetal force on the object represented by the dot?

A
B
C
D

Answer 1

C

C points radially inward toward the circle's center — centripetal force (and centripetal acceleration) always points toward the center of the circular path, perpendicular to the tangent.