DaveC426913's latest activity
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DaveC426913 replied to the thread B Simple mass/scale puzzle.I did look at it and tried to follow it. I'll have to spend more time on it. -
The solution to what problem? This question probes whether one knows and understands the context of a spring scale's reading. Here it...
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DaveC426913 replied to the thread B Simple mass/scale puzzle.I should point out that most laypeople, including myself, don't usually think of weights and scales in terms of Newtons. I see a...
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DaveC426913 replied to the thread B Simple mass/scale puzzle.Yup. I know exactly what you mean. I often use the "opaque screen" technique to help people understand things too. Theres a million...
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Suppose I asked you to answer the following binary choice question. The figure on the right shows a 10 kg hanging mass connected to a...
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DaveC426913 replied to the thread B Simple mass/scale puzzle.The many stacked scales scenario can be perfectly static too. That is what I was describing.
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DaveC426913 replied to the thread B Simple mass/scale puzzle.If you replaced that string with 10 scales, they would all read 100N? The vertical column of things would be so stretched it would...
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This thread is the gift that keeps on giving. Here is a related question that came to me last night that could form the basis for a...
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DaveC426913 replied to the thread B Simple mass/scale puzzle.Yup. I would say this is the crux. I can get to the right answer by altering the scenario and then altering it back, but I cannot look...
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I think that the allure of this problem is based on the tendency of people to draw an incorrect inference from a very familiar...
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See Post #113 for a revised version that hopefully addresses your concerns.
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DaveC426913 replied to the thread B Simple mass/scale puzzle.Absolutely not. As I said, you've shown no correlation between the single equation you posted and its relevance to the diagram.
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DaveC426913 replied to the thread B Simple mass/scale puzzle.Oh fer cryin out loud the scales are hanging from the ceiling.
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DaveC426913 replied to the thread B Simple mass/scale puzzle.Yes. Agree. What I don't seem to see is a formal solution of the initial scenario that does not involve an altered scenario along with...
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DaveC426913 replied to the thread Wood/Glass/Metal DIY lifting concrete blocks with a lever and a grabber.Yeah, balloon is a great idea in theory, but inflating and deflating it is gonna be troublesome.
