Physics

posted by .

A non-uniform beam of length L and weight w makes an angle of è with the horizontal. It is held in position by a frictionless pivot at its upper-right end and by a cable a distance of farther down the beam and perpendicular to it. The center of gravity of the beam is a distance of x down the beam from the pivot. Lighting equipment exerts a downward force of F on the lower-left end of the beam.

a)Find the tension T in the cable.
b)Find the vertical component of the force exerted on the beam by the pivot.
Your answer should be positive if the force is upward, negative if the force is downward.
c)Find the magnitude of the horizontal component of the force exerted on the beam by the pivot.
Your answer should be positive if the force is rightward, negative if the force is leftward.

I don't even know where to start?

I don't follow the picture. However, you can sum moments about any point, and you can sum vertical and horizontal forces since it is in equilibrium. That will give the governing equations.

  • Physics -

    I don't know either

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A uniform steel beam of length 5.50 m has a weight of 4.50 103 N. One end of the beam is bolted to a vertical wall. The beam is held in a horizontal position by a cable attached between the other end of the beam and a point on the …
  2. Physics

    A uniform steel beam of length 5.50 m has a weight of 4.50 103 N. One end of the beam is bolted to a vertical wall. The beam is held in a horizontal position by a cable attached between the other end of the beam and a point on the …
  3. Physics

    A uniform steel beam of length 5.50 m has a weight of 4.50 103 N. One end of the beam is bolted to a vertical wall. The beam is held in a horizontal position by a cable attached between the other end of the beam and a point on the …
  4. Science

    A nonuniform beam 4.52 m long and weighing 1.03 kN makes an angle of 25 degrees below the horizontal. It is held in position by a frictionless pivot at its upper-right end and by a cable a distance of 3.06 m farther down the beam and …
  5. Physics

    A uniform beam of length 1.0 m and mass 16 kg is attached to a wall by a cable that makes an angle of 30 degrees with the end of the beam, as shown in the figure. The beam is free to pivot at the point where it attaches to the wall. …
  6. physics

    "A 1220-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam. Find a) the magnitude of the tension in the cable and b) the magnitude …
  7. Physics

    "A 1220-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960-N crate hangs from the far end of the beam. Find a) the magnitude of the tension in the cable and b) the magnitude …
  8. physics

    A uniform, horizontal beam is 5.00m long and has a weight of 200N. The beam is hinged at one end to a wall. A 600N weight is attached to the order end of the beam. The beam is supported by cable at the end opposite the wall. The cable …
  9. Physics

    A uniform beam of weight 245 N, and length L, sticks out from a vertical wall. A lightweight cable connects the end of the beam to the wall, making an angle of 65.0° between the beam and the cable. What is the tension in the cable?
  10. physics

    a uniform beam with a weight of 51.3 N and a length of 3.23 m is hinged at its lower end, and a horizontal force Upper F Overscript right-arrow EndScripts of magnitude 64.0 N acts at its upper end. The beam is held vertical by a cable …

More Similar Questions