)Your friend nods back and forth to you,making the yes motion.What lever system is being represented by this 'yes' motion?
A)First-class lever
B)Second-class lever
C)Third-class lever

Question

Quizplus · Accepted Answer

In a first-class lever, the effort force and load force are on opposite sides of the fulcrum, like a seesaw. When your friend nods their head, their neck acts as the fulcrum, their head is the load, and the muscles in their neck are the effort force. Therefore, the 'yes' motion represents a first-class lever.

)Your Friend Nods Back and Forth to You,making the Yes