A person carries a plank of wood long 2m with one hand pushing down on it at one end with a force F1 and the other hand holding it up with a force of F2 applied at a distance of 50 cm from the same end of the plank. The plank has a mass of 20 kg and its centre of gravity is at the middle of the plank.

What are the magnitue of F1 and F2?

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i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

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firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

its a 5.5 n

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