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  • Question

  • The centre of gravity of the trapezium as shown in below figure from the side is at a distance of
    The centre of gravity of the trapezium as shown in below figure from the side is at a distance of


  • Options
  • A. The centre of gravity of the trapezium as shown in below figure from the side is at a distance of
  • B. The centre of gravity of the trapezium as shown in below figure from the side is at a distance of
  • C. The centre of gravity of the trapezium as shown in below figure from the side is at a distance of
  • D. The centre of gravity of the trapezium as shown in below figure from the side is at a distance of

  • Correct Answer
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    • Applied Mechanics problems

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    • 1. 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
    • 2. 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
    • 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. Time of flight of a projectile on a horizontal plane, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. 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
    • 6. 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
    • 7. 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
    • 8. 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
    • 9. The moment of inertia of the shaded portion of the area shown in below figure about the X-axis, is

    • Options
    • A. 229.34 cm4
    • B. 329.34 cm4
    • C. 429.34 cm4
    • D. 529.34 cm4.
      • Discuss
    • 10. A rod 5 m in length is moving in a vertical plane. When it is inclined at 60° to horizontal, its lower end is moving horizontally at 3 m/sec and upper end is moving in vertical direction. The velocity of its upper end, is

    • Options
    • A. 0.5 m/sec
    • B. 1.0 m/sec
    • C. 1.5 m/sec
    • D. 2.5 m/sec
    • E. 3.0 m/sec
      • Discuss

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