If , then work done in the first 4s will be:
(Mass of the particle is 3 gram)
1. 384 mJ
2. 168 mJ
3. 192 mJ
4. None of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe bob of a simple pendulum having length l, is displaced from the mean position to an angular position θ with respect to vertical. If it is released, then the velocity of the bob at the lowest position will be:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA child is sitting on a swing. Its minimum and maximum heights from the ground are \(0.75\) m and \(2\) m, respectively. Its maximum speed will be: (Take \(g=10\) m/s2)
1. \(10\) m/s
2. \(5\) m/s
3. \(8\) m/s
4. \(15\) m/s
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA stone is tied to a string of length 'l' is whirled in a vertical circle with the other end of the string as the centre. At a certain instant of time, the stone is at its lowest position and has a speed 'u'. The magnitude of the change in velocity as it reaches a position where the string is horizontal (g being acceleration due to gravity) is:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA ball is thrown vertically upward. It has a speed of 10m/sec when it has reached one-half of its maximum height. How high does the ball rise? Take g = 10 m/s2:
1. 5m
2. 15m
3. 10 m
4. 20 m
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology