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  • Question

  • A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is


  • Options
  • A. 16 m/sec
  • B. 18 m/sec
  • C. 20 m/sec
  • D. 22 m/sec.

  • Correct Answer
  • 20 m/sec 

    • Applied Mechanics problems

    Search Results

    • 1. The unit of impulse, is

    • Options
    • A. kg.m/sec
    • B. kg.m/sec3
    • C. kg.m/sec2
    • D. kg.m2/sec.
      • Discuss
    • 2. The centre of gravity of a quadrant of a circle lies along its central radius at a distance of

    • Options
    • A. 0.2 R
    • B. 0.3 R
    • C. 0.4 R
    • D. 0.5 R
    • E. 0.6 R.
      • Discuss
    • 3. The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator

    • Options
    • A. eastward
    • B. northward
    • C. westward
    • D. southward
    • E. upward.
      • Discuss
    • 4. The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane

    • Options
    • A. to be zero
    • B. to be maximum
    • C. to be minimum
    • D. none of the these.
      • Discuss
    • 5. M.I. of solid sphere, is

    • Options
    • A. 2/3 Mr2
    • B. 2/5 Mr2
    • C. Mr2
    • D. ?r4/2
    • E. 1/2 Mr2.
      • Discuss
    • 6. The motion of a particle moving with S.H.M. from an extremity to the other, constitutes

    • Options
    • A. half an oscillation
    • B. one full oscillation
    • C. two oscillations
    • D. none of these.
      • Discuss
    • 7. The reaction at the support D of the continuous beam ABCD, hinged at two points shown in below figure is

    • Options
    • A. 1.6 t ?
    • B. 1.6 t ?
    • C. 0.5 t ?
    • D. 0.5 t ?
    • E. 8.5 t ?
      • Discuss
    • 8. For a self-locking machine, the efficiency should be

    • Options
    • A. less than 60%
    • B. 50%
    • C. more than 50%
    • D. None of these.
      • Discuss
    • 9. Centre of gravity of a thin hollow cone lies on the axis of symmmetry at a height of

    • Options
    • A. one-half of the total height above base
    • B. one-third of the total height above base
    • C. one-fourth of the total height above base
    • D. none of these.
      • Discuss
    • 10. When a body falls freely under gravitational force, it possesses

    • Options
    • A. maximum weight
    • B. minimum weight
    • C. no weight
    • D. no effect on its weight.
      • Discuss

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