2025, Question 3 · Experimental Design and Analysis · 10 points · about 25 minutes
Balancing a meterstick to find masses
Design a balancing procedure to find a block's mass with a linear graph, then linearize tension and angle data for a horizontal meterstick, plot it, draw a best fit line, and find the meterstick's mass.
Lessons this question draws on
1 Read the question
The question is College Board's, from the 2025 exam. It starts on page 8 of the PDF.
2 Write your answer
Answer each part the way you would on the exam, in full sentences, with your work shown. Your writing saves as you type.
3 Score it
Score your answer against College Board's scoring guidelines, one point at a time. Give yourself a point only when your answer says what the guideline asks for.
Scoring guidelines (PDF, page 8) What the exam readers saw (Chief Reader report)
Question, scoring guidelines and Chief Reader report: College Board. The title and summary are ours.