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Applied Mechanics problems

  • 1. A body is said to move with Simple Harmonic Motion if its acceleration, is

  • Options
  • A. always directed away from the centre, the point of reference
  • B. proportional to the square of the distance from the point of reference
  • C. proportional to the distance from the point of reference and directed towards it
  • D. inversely proportion to the distance from the point of reference
  • E. none of these.
    • Discuss
  • 2. Two forces of 6 Newtons and 8 Newtons which are acting at right angles to each other, will have a resultant of

  • Options
  • A. 5 Newtons
  • B. 8 Newtons
  • C. 10 Newtons
  • D. 12 Newtons.
    • Discuss
  • 3. Power can be expressed as

  • Options
  • A. work/energy
  • B. work/time
  • C. work x time
  • D. work/distance.
    • Discuss
  • 4. If ? and u are the angle of projection and initial velocity of a projectile respectively, the horizontal range of the projectile, is

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 5. A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be

  • Options
  • A. 0.5 m/sec
  • B. 1.5 m/sec
  • C. 2.5 m/sec
  • D. 3.5 m/sec
  • E. 4.5 m/sec.
    • Discuss
  • 6. M.I. of a thin ring (external diameter D, internal diameter d) about an axis perpendicular to the plane of the ring, is

  • Options
  • A. (D4 + d4)
  • B. (D4 - d4)
  • C. (D4 + d4)
  • D. (D4 x d4).
    • Discuss
  • 7. Pick up the correct statement from the following for the structure shown in below figure.
    Civil Engineering Applied Mechanics: Pick up the correct statement from the following for the structure shown in below figure.

  • Options
  • A. The horizontal reaction at A is 23t ?
  • B. The horizontal reaction at C is 23t ?
  • C. The vertical reaction at A is zero
  • D. The vertical reaction at C is 2 t ?
  • E. All the above.
    • Discuss
  • 8. The ratio of the reactions RA and RB of a simply supported beam shown in below figure is
    Civil Engineering Applied Mechanics: The ratio of the reactions RA and RB of a simply supported beam

  • Options
  • A. 0.50
  • B. 0.40
  • C. 0.67
  • D. 1.00
  • E. 1.50
    • Discuss
  • 9. A 50 kg boy climbs up a 8 m rope in gymnasiam in 10 sec. The average power developed by the boy is approximately

  • Options
  • A. 400 watts
  • B. 500 watts
  • C. 4000 watts
  • D. none of these.
    • Discuss
  • 10. The following statement is one of the laws of Dynamic friction

  • Options
  • A. The force of friction always acts in a direction opposite to that in which a body is moving
  • B. The magnitude of the kinetic friction bears a constant ratio to the normal reaction between two surfaces. The ratio being slightly less than that in the case of limiting friction
  • C. For moderate speeds the force of friction remains constant but decreases slightly with the increase of speed
  • D. all the above.
    • Discuss

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