Calculate the weight of an iron rod (D = 490.68 pounds per cubic foot), 5 feet long and 2 inches in diameter, as it hangs inside an empty vessel: (left side image)
Right side image: Next, calculate the amount of weight indicated by the scale as the vessel fills with water until 3 feet of the rod is submerged.
Hint: the metal rod will be displacing a volume of water 3 feet in length and 2 inches in diameter.
Be sure to show all your mathematical work so that your instructor will be able to check the conceptual validity of your technique(s). A good way to check to see if you’re solving the problem correctly is to check that each and every one of your intermediate calculations (i.e. the results you get mid-way during the process to arrive at the final answer) has real physical meaning.
If you truly understand what you are doing, you will be able to identify the correct unit of measurement for every intermediate result and also be able to show where that number applies to the scenario at hand.
More Questions:
Answer:
Dry weight = 53.52 pounds
Submerged (by 3 feet) weight = 49.44 pounds
Share your answers & explanation with us through the below comments section.
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Credits: Tony R. Kuphaldt
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can anyone tell me how to solve the left pic?