AP Physics 1: Algebra-Based · Past multiple choice · Question 7, 2012 AP Physics B course description · Calculator allowed
Balancing a rod with one more force
Two equal upward forces act on a massless rod on a pivot. Decide where a third force of the same size could go to keep the rod balanced.
Lessons this question tests
1 Read the question
The question is College Board's: sample question 7 in AP Physics B and Physics C Course Description. It starts on page 51 of the PDF. College Board no longer posts this edition, so it opens from the copy the Internet Archive saved on July 17, 2013. A graphing calculator is allowed, as on the exam.
Open Question 7 (PDF, page 51)
2 Pick your answer
Question and answer key: College Board, from the Internet Archive. The title and summary are ours.