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35' Steel I-Beam Bridge Build.

A construction worker attempts to lift a uniform beam off the floor and raise it to a vertical position. The beam is 2.50 m long and weighs 500 N . At a certain instant the worker holds the beam momentarily at rest with one end at distance d= 1.50 m above the floor, as shown in Fig. 12-75, by exerting a force P⃗ on the beam, perpendicular to the beam. (a) What is the magnitude P ? (b) What is the magnitude of the (net) force of the floor on the beam? (c) What is the minimum value the coefficient

Casting Of 1st Floor Beam & Slab

Triple Beam Balance Diagram

Reading a Triple Beam Balance (updated)