Consider a rigid steel beam oflength L = 14.5 m andmass mb = 377 kg resting ontwo supports, one at each end. A worker ofmass mw = 78 kg sits on thebeam at a distance x from support A. Refer tothe figure, though note that it is not drawn to scale.
Consider A Rigid Steel Beam Of Length L 14 5 M And Mass Mb 377 Kg Resting On Two Supports One At Each End A Worker 1 (15.92 KiB) Viewed 43 times
a) Enter an expression for the force support B must exert on thebeam in order for it to remain at rest, in terms of definedquantities, x, and g.
b) When the worker sits at adistance x = 7.5 m from support A, calculatethe force, in newtons, that support B must exert on the beam inorder for it to remain at rest. Use g with threesignificant figures.
c) The force exerted on the beam by support A is measuredand found to be FA = 2290 N. At whatdistance x, in meters, from support A is the worker sittingnow?
A X L B
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