00. Centre of Mass
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Rotational Motion

149748 Choose correct statement
A. The position of centre of mass of a system is dependent on the choice of coordinate system.
B. Newton's second law of motion is applicable to the centre of mass of the system.
C. Internal forces cannot change the state of centre of mass.
D. Internal forces can change the state of centre of mass

1 Both \(\mathrm{A}\) and \(\mathrm{B}\) are correct
2 Both \(\mathrm{B}\) and \(\mathrm{C}\) are wrong
3 Both \(\mathrm{A}\) and \(\mathrm{C}\) are wrong
4 Both \(\mathrm{A}\) and \(\mathrm{D}\) are wrong
AP EAMCET -2012
Rotational Motion

149760 Two persons of masses \(55 \mathrm{~kg}\) and \(65 \mathrm{~kg}\) respectively, are at the opposite ends of a boat. The length of the boat is \(3 \mathrm{~m}\) and weights 100 kg. The \(55 \mathrm{~kg}\) man walks up to the \(65 \mathrm{~kg}\) man and sits with him. If the boat is in still water the centre of mass of the system shifts by

1 \(3 \mathrm{~m}\)
2 \(2.3 \mathrm{~m}\)
3 zero
4 \(0.75 \mathrm{~m}\)
AIPMT-2012
NEET DIGITAL LIBRARY
Rotational Motion

149748 Choose correct statement
A. The position of centre of mass of a system is dependent on the choice of coordinate system.
B. Newton's second law of motion is applicable to the centre of mass of the system.
C. Internal forces cannot change the state of centre of mass.
D. Internal forces can change the state of centre of mass

1 Both \(\mathrm{A}\) and \(\mathrm{B}\) are correct
2 Both \(\mathrm{B}\) and \(\mathrm{C}\) are wrong
3 Both \(\mathrm{A}\) and \(\mathrm{C}\) are wrong
4 Both \(\mathrm{A}\) and \(\mathrm{D}\) are wrong
AP EAMCET -2012
Rotational Motion

149760 Two persons of masses \(55 \mathrm{~kg}\) and \(65 \mathrm{~kg}\) respectively, are at the opposite ends of a boat. The length of the boat is \(3 \mathrm{~m}\) and weights 100 kg. The \(55 \mathrm{~kg}\) man walks up to the \(65 \mathrm{~kg}\) man and sits with him. If the boat is in still water the centre of mass of the system shifts by

1 \(3 \mathrm{~m}\)
2 \(2.3 \mathrm{~m}\)
3 zero
4 \(0.75 \mathrm{~m}\)
AIPMT-2012
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