1. Questions

Physics

A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static equilibrium, and it is horizontal, as shown in the figure above. The tension in the rope is T = 637 N.

(a) Determine the unknown mass m1, at the left end of the beam.



(b) Determine the distance, x, from the left end of the beam to the point where the rope is attached. Note: take the torque about the left end of the beam.

  1. 👍
  2. 👎
  3. 👁
Katie

  1. (a) From static equilibrium,
    (m1 + m2 + mb)g = T = 637 M
    Solve for m1

    (b) Now that you know all three masses, and that the weight of the beam acts through the center, do as they suggest and set the torque about either end of the beam equal to zero. That will let you solve for x. I cannot do this for you because you have not said which end has mass m1.

    1. 👍
    2. 👎
    drwls

  2. For B
    left side has m1
    Right side has m2
    picture looks like this
    ----------------------------------
    I T= 637
    I
    mb= 10kg I
    ------------------ ----------
    <------x---------->
    I I
    I I
    I I
    m1 m2
    ------------L=3m-------------

    1. 👍
    2. 👎
    katie

  4. the uniform beam has a mass of 180 kg under equilibrium. determine the reaction at the supports

    1. 👍
    2. 👎
    kurdy

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    a uniform beam 6.0 metre long and weighing 4kg rests on support at p and q placed left and right 1.0 metres from each end of the beam weights of mass 10 kg and 8kg are placed near p and q respectively one each end of the

  2. Physics!!! :)

    A student of mass 78 kg wants to walk beyond the edge of a cliff on a heavy beam of mass 180 kg and length 10 m. The beam is not attached to the cliff in any way, it simply lays on the horizontal surface of the clifftop, with one

  3. Physics

    A floodlight with a mass of 20.0 kg is used to illuminate the parking lot in front of a library. The floodlight is supported at the end of a horizontal beam that is hinged to a vertical pole. A cable that makes an angle of 30

  4. Physics

    Researchers have found that a gecko's foot is covered with hundreds of thousands of small hairs (setae) that allow it to walk up walls and even across ceilings. A single foot pad, which has an area of , can attach to a wall or

  1. Physics

    A loudspeaker of mass 25.0 kg is suspended a distance of 1.00 m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of 2.50 m . What is the tension in each of the cables?

  2. Physics

    A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.7 kg and the sign has a mass of ms = 17.4 kg. The length of the beam is L = 2.83 m. The sign is attached at the very end of the beam, but the

  3. Physics

    A loudspeaker of mass 16.0 kg is suspended a distance of h = 2.00 m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 2.90 m What is the tension T in each of the cables? Use

  4. Physics

    Two small spheres of mass 451 g and 695 g are suspended from the ceiling at the same point by massless strings of equal length 10.9 m . The lighter sphere is pulled aside through an angle of 65 degrees from the vertical and let

  1. Physics

    A person with mass m1 = 57 kg stands at the left end of a uniform beam with mass m2 = 92 kg and a length L = 2.7 m. Another person with mass m3 = 67 kg stands on the far right end of the beam and holds a medicine ball with mass m4

  2. Physic

    A Uniform beam 6.0 metre long and weighing 4kg rest on supports at p and q placed left and right 1.0 metre from each end of the beam. Weights of mass 10kg and 8kg are placed near p and q respectively one each end of the beam.

  3. physics

    A purple beam is hinged to a wall to hold up a blue sign. The beam has a mass of mb = 6.9 kg and the sign has a mass of ms = 15.3 kg. The length of the beam is L = 2.55 m. The sign is attached at the very end of the beam, but the

  4. physics

    a fis is suspended from a 6m uniform beam supported by a cable and attached by a pivot to the ground. the beam has a mass of 20 kg and the cable can withstand a maximum tension of 10000 N. find masimum wright of a fish that can be

You can view more similar questions or ask a new question.