Two springs \(\mathrm{A}\) and \(\mathrm{B}\) \((k_A=2k_B)\) are stretched by applying forces of equal magnitudes at the four ends. If the energy stored in \(\mathrm{A}\) is \(E,\) that in \(\mathrm{B}\) is:
1. \(\frac{E}{2}\)
2. \(2E\)
3. \(E\)
4. \(\frac{E}{4}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo equal masses are attached to the two ends of a spring of spring constant k. The masses are pulled out symmetrically to stretch the spring by a length x over its natural length. The work done by the spring on each mass is
1. \(\frac{1}{2} \mathrm{kx}^{2}\)
2. \(-\frac{1}{2} \mathrm{kx}^{2}\)
3. \(\frac{1}{4} \mathrm{kx}^{2}\)
4. \(-\frac{1}{4} \mathrm{kx}^{2}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe negative of the work done by the conservative internal forces on a system equals the change in:
1. total energy
2. kinetic energy
3. potential energy
4. none of these
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology(a) | The spring was initially compressed by a distance \(x\) and was finally in its natural length. |
(b) | It was initially stretched by a distance of \(x\) and finally was in its natural length. |
(c) | It was initially in its natural length and finally in the compressed position. |
(d) | It was initially in its natural length and finally in a stretched position. |
Choose the correct option from the given ones:
1. | (a) and (b) only |
2. | (b) and (c) only |
3. | (c) and (d) only |
4. | (a), (b), (c), (d) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology