15. Rotational Equilibrium
Beam / Shelf Against a Wall
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Practice this topic
- Multiple Choice
A beam 200 kg in mass and 6 m in length is held horizontally against a wall by a hinge on the wall and a light rod underneath it, as shown. The rod makes an angle of 30° with the wall and connects with the beam 1 m from its right edge. Calculate the angle that the Net Force of the hinge makes with the horizontal (use +/– for above/below +x axis, and use g=10 m/s2.)
1501views4rank4comments - Multiple Choice
A beam 200 kg in mass and 4 m in length is held against a vertical wall by a hinge on the wall and a light horizontal cable, as shown. The beam makes 53° with the wall. At the end of the beam, a second light cable holds a 100 kg object. Calculate the angle that the Net Force of the hinge makes with the horizontal (use +/– for above/below +x axis, and use g=10 m/s2.)
1209views4rank7comments - Multiple ChoiceThe figure shows a75 kgconstruction worker sitting on a massless beam with a length of 3.0 m. If the tension in the cable is1100 N, how far from the left end of the beam is the construction worker sitting?1440views
- Multiple Choice
A uniform beam of length and mass rests horizontally with one end on a rough floor and the other end leaning against a smooth vertical wall (see Figure 1). Which of the following statements is correct about the forces acting on the beam at equilibrium?
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