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Physics Test 187
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  • Question 1/10
    4 / -1

    A disc of radius 2m and mass 200kg is acted upon by a torque 100N-m. Its angular acceleration would be

  • Question 2/10
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    A solid sphere and a solid cylinder of same mass are rolled down on two inclined planes of heights h1 and h2 respectively. If at the bottom of the plane the two objects have same linear velocities, then the ratio of h1 : h2 is

  • Question 3/10
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    A particle of mass m moves along line PC with velocity ν as shown. What is the angular momentum of the particle about P?

  • Question 4/10
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    A mass is whirled in a circular path with constant angular velocity and its angular momentum is L. If the string is now halved keeping the angular velocity the same, the angular momentum is

  • Question 5/10
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    Two point masses of 0.3 kg and 0.7 kg are fixed at the ends of a rod of length 1.4 m and of negligible mass. The rod is set rotating about an axis perpendicular to its length with a uniform angular speed. The point on the rod through which the axis should pass in order that the work required for rotation of the rod is minimum, is located at a distance of

  • Question 6/10
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    Calculate the work done by a car against gravity in moving along a straight horizontal road. The mass of the car is 400 kg and the distance moved is 2 m.

  • Question 7/10
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    The potential energy for a conservative system is given by U = ax2 – bx, where aa and bb are positive constants. The law of the force governing the system is

  • Question 8/10
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    The average energy consumed by a human being in a day is

  • Question 9/10
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    The kilowatt-hour is the unit of

  • Question 10/10
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    For inelastic collision between two spherical rigid bodies

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