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Assertion: Product of distance and velocity (i.e. momentum) is basic to the effect of force on motion. Reason: Same force for same time causes the same change in momentum for different

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: Angle of repose is equal to angle of limiting friction. Reason: When a body is just at the point of motion, the force of friction of this stage is called as limiting

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For a moving particle (mass `m`, velocity `v`) having a momentum `p`, which one of the following correctly describes the kinetic energy of the

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A particle which is experiencing a force, is given by `F=3hati - 12hatj`, undergoes a displacement of `d=4hati`. If the particle had a kinetic energy of `3hatJ` at the beginning of the displacement, what is its kinetic energy at the end of the displacement

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If the linear momentum of a body is increased by 50%, then the kinetic energy of that body increases

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The angular momentum L of a single particle can be represented

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Figure shows a composite system of two uniform rods of lengths as indicated. Then the coordinates of the centre of mass of the system of rods are..............

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A bicycle wheel rolls without slipping on a horizontal floor. Which one of the following statements is true about the motion of points on the rim of the wheel, relative to the axis at the wheel’s

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Assertion: If bodies slide down an inclined plane without rolling, then all bodies reach the bottom simultaneously is not necessary. Reason: Acceleration of all bodies are equal and independent of the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Rolling MotionThe rolling motion can be regarded as the combination of pure rotation and pure translation. It is also one of the most common motions observed in daily life.Suppose the rolling motion (without slipping) of a circular disc on a level surface. At any instant, the point of contact `P_0` of the disc with the surface is at rest (as there is no slipping). If `v_(CM)` is the velocity of centre of mass which is the geometric centre C of the disc, then the translational velocity of disc is `v_(CM)`, which is parallel to the level surface.Velocity of centre of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Two planets A and B have the same material density. If the radius of A is twice that of B, then the ratio of escape velocity `(v_A)/(v_B)`

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The time period of a satellite in a circular orbit around a planet is independent

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Geo-stationary satellites are placed in equatorial orbits at the height

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A pendulum beats sounds on the earth. Its time period on a stationary satellite of the earth will

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Weightlessness experienced while orbiting the earth in spaceship, is the result of

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The component waves producing a stationary wave have amplitude, Frequency and velocity of 8 cm, 30HZ and 180 cm/s respected. Write the equation of the stationary

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Sameer went on his bike from Delhi to Gurgaon at a speed of 60km/hr and cameback at a speed of 40km/hr. what is his average speed for entire

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A railway train 400m long is going from New Delhi railway station to Kanpur. Can we consider railway train as a point

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What causes variation in velocity of a

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A particle is thrown upwards. It attains a height (h) after 5 seconds and again after 9s comes back. What is the speed of the particle at a height

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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