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Q. No.A uniform rod of length \(L\) is standing upright, pivoted at its lower end. The rod can freely rotate about the pivot. If it is slightly disturbed so that it falls to the ground, the speed of the highest point, when it strikes the ground will be:
| 1. | \(\sqrt{2gL}\) | 2. | \(\sqrt{3gL}\) |
| 3. | \(\sqrt{6gL}\) | 4. | \(\sqrt{gL}\) |
Subtopic: Â Rotational Motion: Dynamics |
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A force is applied to a hollow spherical shell so that it acts through its centre. It causes an acceleration of \(3\) m/s2. If the same force is applied to the spherical shell, acting tangent to its surface, the acceleration will be: (Assuming no friction is available.)
1. \(3\) m/s2
2. \(2\) m/s2
3. zero
4. \(1\) m/s2
1. \(3\) m/s2
2. \(2\) m/s2
3. zero
4. \(1\) m/s2
Subtopic: Â Rotational Motion: Dynamics |
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From NCERT
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Hints
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Q. No.
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