Which of the Following is True of a Class I

Question

Which of the following is true of a class I lever?
A) The weight is between the fulcrum and the pull
B) Lifting a snow shovel is an example
C) Extending the head is an example
D) The pull is between the fulcrum and the weight

Accepted Answer

In a class I lever, the fulcrum is positioned between the effort (pull) and the load (weight). Extending the head is an example of a class I lever, where the fulcrum is at the atlanto-occipital joint, the effort is provided by neck muscles, and the load is the weight of the head.