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AP Physics 1
5.6 Newton’s Second Law in Rotational Form
5.5 Rotational Equilibrium and Newton’s First Law in Rotational Form
5.4 Rotational Inertia
5.3 Torque
IntermediateFRQDrawing RepresentationsMathematicalProportional AnalysisConceptual24.5k
A vertical wall is on the left side of the image. A horizontal uniform rectangular beam extends to the right, attached to the wall by a circular hinge at its left end. A small square block labeled \(m_0\) sits on top of the beam. A horizontal dimension line below the beam indicates the distance from the wall to the center of the block is \(x\). Another dimension line indicates the full length of the beam is \(L\). A taut cable connects the right end of the beam to a point higher up on the vertical wall. An arc indicates the angle between the horizontal beam and the cable, labeled \(\theta\).
Figure 1. Beam supported by a hinge and cable.
A uniform rigid beam of mass \(M\) and length \(L\) is attached to a vertical wall by a hinge. The beam is held horizontally by a light cable attached to the right end of the beam. The cable makes an angle \(\theta\) with the beam and is attached to the wall above the hinge. A small block of mass \(m_0\) rests on the beam at a horizontal distance \(x\) from the hinge. The system is initially at rest in static equilibrium.

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