All questions
AP Physics C: Mechanics
5.5 Rotational Equilibrium and Newton’s First Law in Rotational Form
5.3 Torque
IntermediateMCQMathematicalConceptual14.3k
A schematic showing a horizontal beam connected to a vertical wall. On the left, a vertical hatched line represents a wall. A small circle on the wall represents a pivot attached to the left end of a uniform horizontal rectangular beam of length \(L\). At the beam's midpoint, a downward arrow labeled \(Mg\) indicates the center of mass at a distance \(L/2\) from the pivot. At a distance \(3L/4\) from the pivot, a straight line representing a cable extends upward and to the left to anchor to the vertical wall, forming an angle \(\theta\) with the horizontal beam. Dimension lines below the beam indicate the distance from the pivot to the center of mass as \(L/2\) and from the pivot to the cable attachment point as \(3L/4\). No other labels, lines, text, or axes appear.
A uniform beam of mass \(M\) supported by a pivot and a cable.
A uniform horizontal beam of mass \(M\) and length \(L\) is attached to a vertical wall by a pivot at its left end. The beam is held in static equilibrium by a light cable attached to the beam at a distance of \(\dfrac{3}{4}L\) from the wall, making an angle \(\theta\) with the horizontal beam. In terms of \(M\) and \(g\), what is the vertical component of the force exerted by the pivot on the beam?

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