An I-beam having a mass of 810 kg and length of 5.1 m has one end attached to a vertical wall, the I-beam is allowed to pivot up and down about the attachment location. A cable is then attached from the vertical wall to the other end of the I-beam. The cable makes an angle of 31º with the I-beam, and the I-beam is horizontal (parallel with the ground). The vertical pin force at the pivot is
A) 8100 N.
B) 4000 N.
C) 6000 N.
D) 3000 N.

Question

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The Answer of An I-beam having a mass of 810 kg and length of 5.1 m has one end attached to a vertical wall, the I-beam is allowed to pivot up and down about the attachment location. A cable is then attached from the vertical wall to the other end of the I-beam. The cable makes an angle of 31º with the I-beam, and the I-beam is horizontal (parallel with the ground). The vertical pin force at the pivot is
A) 8100 N.
B) 4000 N.
C) 6000 N.
D) 3000 N.

An I-Beam Having a Mass of 810 Kg and Length