A 15-Kg Child Is Sitting on a Playground Teeter-Totter,1

Multiple Choice

A 15-kg child is sitting on a playground teeter-totter,1.5 m from the pivot.What is the minimum distance,on the other side of the pivot,such that a 220-N force will make the child lift off the ground?

A) 1.0 m
B) 1.5 m
C) 0.10 m
D) 9.8 m
E) 2.4 m