rotational-motion

Related Questions

• A body is rolling without slipping on a horizontal plane. If the rotational energy of the body is 40% of the total kinetic energy, then the body might be

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• Two loops $P$and $Q$are made from a uniform wire. The radii of $P$and $Q$ are ${{r}_{1}}$ and ${{r}_{2}}$respectively, and their moments of inertia are ${{I}_{1}}$ and ${{I}_{2}}$respectively. If ${{{I}_{2}}}/{{{I}_{1}}=4}\;$ then $\frac{{{r}_{2}}}{{{r}_{1}}}$ equals

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• One quarter sector is cut from a uniform circular disc of radius R. This sector has mass M. It is made to rotate about a line perpendicular to its plane and passing through the centre of the original disc. Its moment of inertia about the axis of rotation is

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• Two particles of masses 1 kg and 3 kg move towards each other under their mutual force of attraction. No other force acts on them. When the relative velocity of approach of the two particles is 2m/s, their centre of mass has a velocity of 0.5 m/s. When the relative velocity of approach becomes 3 m/s, the velocity of the centre of mass is

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• A cylinder of mass M and radius R rolls on an inclined plane. The gain in kinetic energy is

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