All questions
AP Physics C: Mechanics
4.2 Change in Momentum and Impulse
4.1 Linear Momentum
IntermediateMCQMathematicalConceptual16.2k
A line graph with a horizontal axis labeled t and a vertical axis labeled F_N. A horizontal dashed line spans the width of the graph at a vertical level labeled Mg. Along the horizontal axis, four time values are marked: 0, t_1, t_2, and t_3, ordered from left to right. A solid curve represents the scale reading. For t < 0, the solid curve lies on the dashed line at Mg. Between t = 0 and t_1, the solid curve slopes downward below the dashed line, reaching a minimum just before t_1, then rises steeply to rejoin the dashed line at t_1. From t_1 to t_2, the solid curve remains flat along the dashed line at Mg. Between t_2 and t_3, the solid curve rises smoothly above the dashed line to form a rounded peak before returning to the dashed line at t_3. For t > t_3, the curve continues horizontally along the dashed line. No other labels, lines, text, or axes appear.
Normal force exerted by the scale on the hourglass as a function of time.
An hourglass of total mass \(M\) rests on a sensitive force scale that measures the upward normal force \(F_N\) exerted on the hourglass. At time \(t = 0\), sand begins to fall from rest from the upper bulb at a constant mass flow rate; the first grains strike the base of the lower bulb at \(t_1\), the last grains exit the upper bulb at \(t_2\), and all sand comes to rest at \(t_3\). The graph shows the scale reading \(F_N\) as a function of time \(t\). Which of the following statements correctly interprets the relationship between the graph and the physical behavior of the hourglass system?

Log In to Continue

Accounts are free! Log in to try this question, see explanations, save progress, and more!

Similar Questions

Tools for a 5

The Quiz Lab library of AP Physics quizzes AP aligned mock tests to help you get a 5. With grading, adaptive explanations, and more. Find a Quiz Find, solve, and grade every AP FRQ ever. Find an FRQ Stuck on AP Physics C: Mechanics? Get unstuck with an AP specialist.1 to 1 tutors who know the exam inside out. Understand weeks of material in a single session.Find a Tutor Learn AP Physics from scratch, quickly. This is the only course you'll need for the year. A self-paced course with everything you need to get a 5. Trusted by over 15,000 students and 200+ schools. Learn fast, or we'll refund your purchase, backed by our 100% satisfaction guarantee. Explore the Course