A crowd of innocent bystanders is under the far end of a beam that is hinged to the building and held up by a support. The Green Goblin comes along and knocks out the support to the beam so the crowd will meet an untimely demise. But just as he does so, Spiderman shoots a web and prevents the beam from collapsing, saving the crowd in the process. The beam remains horizontal. The mass of the beam is mb = 600 kg. The length of the beam is L = 20m. The web attaches to the beam at a distance of d = 18 m from the hinge. The web is perpendicular to the beam. Draw a free-body diagram of the beam. Write down the force equations for static equilibrium in the y direction for the beam Write down the torque equations for static equilibrium calculating the correct lever arms. What force does Spiderman have to provide to support the beam? What is the force in the y direction on the hinge of the beam?
A crowd of innocent bystanders is under the far end of a beam that is hinged to the building and held up by a support. The Green Goblin comes along and knocks out the support to the beam so the crowd will meet an untimely demise. But just as he does so, Spiderman shoots a web and prevents the beam from collapsing, saving the crowd in the process. The beam remains horizontal. The mass of the beam is mb = 600 kg. The length of the beam is L = 20m. The web attaches to the beam at a distance of d = 18 m from the hinge. The web is perpendicular to the beam.
Draw a free-body diagram of the beam.
Write down the force equations for static equilibrium in the y direction for the beam
Write down the torque equations for static equilibrium calculating the correct lever arms.
What force does Spiderman have to provide to support the beam?
What is the force in the y direction on the hinge of the beam?
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