Question

Which of the following objects is correctly matched with a type of joint that performs a similar movement? A) a shower head, which is similar to a hinge joint B) a swivel chair, which is similar to a hinge joint C) a doorknob, which is similar to a pivot joint D) a cabinet door, which is similar to a pivotal joint

Answer 1

C. a doorknob, which is similar to a pivot joint

Answer 2

I think its c because a pivot joint would be circular movement in only one manner and that matches the turning of a door knob. a hinge joint does not swivel like a chair or move like a shower head, and a cabinet door, in my opinion would be like a hinge joint