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Applied Mechanics problems

  • 1. Two particles have been projected at angles 64° and 45° to the horizontal. If the velocity of projection of first is 10 m/sec, the velocity of projection of the other for equal horizontal ranges is

  • Options
  • A. 9.3 m/sec
  • B. 8.3 m/sec
  • C. 7.3 m/sec
  • D. 6.3 m/sec.
    • Discuss
  • 2. Time of flight of a projectile on a horizontal plane, is

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 3. Pick up the incorrect statement from the following :

  • Options
  • A. The C.G. of a circle is at its centre
  • B. The C.G. of a triangle is at the intersecton of its medians
  • C. The C.G. of a rectangle is at the intersection of its diagonals
  • D. The C.G. of a semicircle is at a distance of r/2 from the centre
  • E. The C.G. of an ecllipse is at the intersection of axes.
    • Discuss
  • 4. The moment of inertia of a hollow circular section whose external diameter is 8 cm and internal diameter is 6 cm, about centroidal axis, is

  • Options
  • A. 437.5 cm4
  • B. 337.5 cm4
  • C. 237.5 cm4
  • D. 137.5 cm4
  • E. 37.5 cm4.
    • Discuss
  • 5. A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The velocity ratio of the lifting machine is

  • Options
  • A. 50
  • B. 55
  • C. 60
  • D. 65
  • E. 70.
    • Discuss
  • 6. The centre of gravity of the trapezium as shown in below figure from the side is at a distance of
    Civil Engineering Applied Mechanics: The centre of gravity of the trapezium as shown in below figure from the side is at a distance of

  • Options
  • A.
  • B.
  • C.
  • D.
    • Discuss
  • 7. A satellite is said to move in a synchronous orbit if it moves at an altitude of 36, 000 km with a maximum velocity of about

  • Options
  • A. 7000 km per hour
  • B. 8000 km per hour
  • C. 9000 km per hour
  • D. 10, 000 per hour
  • E. 11, 000 km per hour.
    • Discuss
  • 8. For perfectly elastic bodies, the value of coefficient of restitution is

  • Options
  • A. zero
  • B. 0.5
  • C. 1.0
  • D. between 0 and 1.
    • Discuss
  • 9. A trolley wire weighs 1 kg per metre length. The ends of the wire are attached to two poles 20 m apart. If the horizontal tension is 1000 kg, the central dip of the cable is

  • Options
  • A. 2 cm
  • B. 3 cm
  • C. 4 cm
  • D. 5 cm.
    • Discuss
  • 10. The moment of inertia of the shaded portion of the area shown in below figure about the X-axis, is
    Civil Engineering Applied Mechanics: The moment of inertia of the shaded portion of the area shown in below figure about the X-axi

  • Options
  • A. 229.34 cm4
  • B. 329.34 cm4
  • C. 429.34 cm4
  • D. 529.34 cm4.
    • Discuss

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