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Lelu [443]
3 years ago
15

Which of these is true of all simple machines?

Physics
1 answer:
sveticcg [70]3 years ago
3 0
The answer to the question is b
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\dfrac{1}{2}(m_b+m_p)V^2 =(m_b+m_p)gh\\\\V=\sqrt{2gh} \ .................(1)

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Now using conservation of momentum as :

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Put the value of V from equation (1) in above equation as :

v=\dfrac{(m_p+m_b)}{m_b}\sqrt{2gh} \\\\v=\dfrac{(1.9+0.011)}{0.011}\sqrt{2\times 9.8\times 0.1}\\\\v=243.21\ m/s

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