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A flagpole, flagmast, flagstaff, or staff is a pole designed to support a flag. If it is taller than can be easily reached to raise the flag, a cord is used, looping around a pulley at the top of the pole with the ends tied at the bottom. The flag is fixed to one lower end of the cord, and is then raised by pulling on the other end.
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Using additional pulleys decreases the force required but increases the distance required to raise a load the same amount. In each instance here the mechanical work done is the same, work being the product of force and distance.
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Diagram 3 shows three rope parts supporting the load W, which means the tension in the rope is W/3. Thus, the mechanical advantage is three-to-one. By adding a pulley to the fixed block of a gun tackle the direction of the pulling force is reversed though the mechanical advantage remains the same, Diagram 3a. This is an example of the Luff tackle.
The material used for the new flagpole is Q345 steel. The steel and two cranes of the flag pole were both imported from Hong Kong. [1] The flagpole's construction took less than a month and was finished in September 2013. [5] The newer flagpole was divided into three segments. The old flagpole was moved to the Aguinaldo Shrine in Kawit, Cavite. [4]