For L = 3.0 m,the total torque about pivot A provided by the forces as shown in the figure is:
1. 210 Nm
2. 140 Nm
3. 95 Nm
4. 75 Nm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFor the same total mass, which of the following will have the largest moment of inertia about an axis passing through the centre of gravity and perpendicular to the plane of the body?
1. A disc of radius a
2. a ring of radius a
3. a square lamina of side 2 a
4. four rods forming square of side 2 a.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe radius of gyration of a uniform rod of length L about an axis passing through its centre of mass is
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo uniform, thin, identical rods, each of mass M and length l are joined together to form a cross. What will be the moment of inertia of the cross about an axis passing through the point at which the two rods are joined and are perpendicular to the plane of the cross?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the linear momentum is increased by 50%, the kinetic energy will increase by
1. 50%
2. 100%
3. 125%
4. 25%
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the kinetic energy of a body increases by 0.1%, the percent increase of its momentum will be
1. 0.05%
2. 0.1%
3. 1.0%
4. 10%
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA solid cylinder and a hollow cylinder, both of the same mass and same external diameter are released from the same height at the same time on an inclined plane. Both roll down without slipping. Which one will reach the bottom first?
1. Both together only when the angle of inclination of the plane is
2. Both together
3. Hollow cylinder
4. Solid cylinder
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA man is sitting on a rotating table with his arms stretched outwards. When he suddenly folds his arms inside, then
1. his angular velocity will decrease
2. his angular velocity remains constant
3. his moment of inertia decreases
4. angular momentum increases
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA body of mass \(M\) and radius \(R\) is rolling horizontally without slipping with speed \(v.\) It then rolls up a hill to a maximum height \(h.\) If \(h=\frac{5v^{2}}{6g},\) what is the moment of inertia of the body?
1. \(\frac{MR^{2}}{2}\)
2. \(\frac{2MR^{2}}{3}\)
3. \(\frac{3MR^{2}}{4}\)
4. \(\frac{2MR^{2}}{5}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyOne circular ring and one circular disc both having the same mass and radius. The ratio of their moments of inertia about the axes passing through their centres and perpendicular to planes will be
1. 1:1
2. 2:1
3. 1:2
4. 4:1
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology