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प्रश्न
A bob suspended from the ceiling of a car which is accelerating on a horizontal road. The bob stays at rest with respect to the car with the string making an angle θ with the vertical. The linear momentum of the bob as seen from the road is increasing with time. Is it a violation of conservation of linear momentum? If not, where is the external force changes the linear momentum?
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उत्तर
There is no violation of conservation of momentum because in the earth's frame the component of tension is acting in the horizontal direction.
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संबंधित प्रश्न
If the total mechanical energy of a particle is zero, is its linear momentum necessarily zero? Is it necessarily nonzero?
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In an elastic collision
(a) the kinetic energy remains constant
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(a) the momentum of the ball just after the collision is same as that just before the collision
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(b) if they are ejected along perpendicular directions. Mass of the proton = 1.67 × 10−27 kg.
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