. A pantograph as shown in the image is used to lift a mass “m” with horizontal force “F”. Assuming that the weight is lifted slowly, what is the horizontal force needed to lift the weight. How does this vary as the weight is lifted? Support your answer with relevant free body diagrams.
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Explanation:
The force F required is equal to mg initially i.e when we consider angle between arms to be 90deg, this value increases as we lift the weight.
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