A 4-m-long I-beam (of uniform shape) having a mass of 48 kg is held at a 35º angle above the floor by a bracket attached to its end. The bracket is securely bolted to the floor. The upward force that the floor must supply to support the bracket is
A) 240 N.
B) 0 N.
C) 390 N.
D) 470 N.

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The Answer of A 4-m-long I-beam (of uniform shape) having a mass of 48 kg is held at a 35º angle above the floor by a bracket attached to its end. The bracket is securely bolted to the floor. The upward force that the floor must supply to support the bracket is
A) 240 N.
B) 0 N.
C) 390 N.
D) 470 N.

A 4-M-Long I-Beam (Of Uniform Shape) Having a Mass of 48