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Hello students, let's have a look on the question.
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A block of mass m is attached to the end of the ideal spring.
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Due to the weight of the block, the block remains at rest when the spring is stretched at a distance h from its equilibrium length.
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The spring has an unknown spring constant k.
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First question of this question is, what is saying at, this is first question, what is the spring constant k? now, here see, we have the spring constant k of the spring.
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We applied just here the mass m, it stretched out to the height of h and this is the equilibrium.
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Now, what is the force at downward? this is mg.
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And what is the upward spring force? we know, spring force is basically f is equal to kx and here length stretch is h.
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So, we can see here f k h, this is the spring force.
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And this is equilibrium.
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So, k h equal to what? mg.
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So, what is the value of h here? this is equal simply mg by k.
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This is the value that we have to find here.
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This is the spring constant.
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Sorry, we have to find the spring constant.
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So, k is equal to simply mg by h...