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All the points of a rigid body rotating about a given axis have same:
Answer: B. Angular velocity All the points of a rigid body rotating about a given axis have same angular velocity.
Answer: B. Angular velocity
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Kepler’s law of areal velocity follows from:
Answer: D. Law of conservation of angular momentum Kepler's law of areal velocity follows from law of conservation of angular momentum.
Answer: D. Law of conservation of angular momentum
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To move a body in a circle, which of the following force is needed:
Answer: C. Centripetal To move a body in a circle centripetal force is needed.
Answer: C. Centripetal
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The centre of mass of system of particles does not depend on:
Answer: B. Force on the particles The centre of mass of system of particles does not depend on force on the particles.
Answer: B. Force on the particles
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A motor cyclist going round in a circular track at a constant speed has:
Answer: C. Acceleration with constant magnitude with its direction changing A motor cyclist going round in a circular track at a constant speed has acceleration with constant magnitude with its direction changing.
Answer: C. Acceleration with constant magnitude with its direction changing
See lessA motor cyclist going round in a circular track at a constant speed has acceleration with constant magnitude with its direction changing.
To move a body in a circle, which of the following force is needed:
Answer: C. Centripetal To move a body in a circle, centripetal force is needed.
Answer: C. Centripetal
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The centre of gravity and centre of mass of bodies coincide:
Answer: B. May be The centre of gravity and centre of mass of body may be coincide.
Answer: B. May be
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When mass and speed are doubled, the kinetic energy increase:
Answer: C. 8 times When mass and speed are doubled, the kinetic energy increase 8 times.
Answer: C. 8 times
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A force acts on a body in the direction of motion. The kinetic energy of body will:
Answer: A. Increase A force acts on a body in the direction of motion. The kinetic energy of body will be increase.
Answer: A. Increase
See lessA force acts on a body in the direction of motion. The kinetic energy of body will be increase.
If a shell fired from a cannon explodes in mid air, then
Answer: C. Its total kinetic energy increase If a shell fired from a cannon explodes in mid air, then its total kinetic energy increase.
Answer: C. Its total kinetic energy increase
See lessIf a shell fired from a cannon explodes in mid air, then its total kinetic energy increase.