Nellie whirls a tether ball in a horizontal circular path over her head.If the action force is Nellie pulling on the string,the reaction force is
A)Nellie pulling on the string.
B)the string pulling on Nellie.
C)the ball pulling on the string.
D)none of the above

Question

Quizplus · Accepted Answer

The reaction force is always equal in magnitude and opposite in direction to the action force. In this case, the action force is Nellie pulling on the string, so the reaction force must be the string pulling on Nellie.

Nellie Whirls a Tether Ball in a Horizontal Circular Path