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  • Question

  • 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.

  • Correct Answer
  • 11, 000 km per hour. 

    • Applied Mechanics problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
    • 4. 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
    • 5. Time of flight of a projectile on a horizontal plane, is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. 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
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. Pick up the correct statement from the following. A rubber ball when strikes a wall rebounds but a lead ball of same mass and velocity when strikes the same wall, falls down

    • Options
    • A. rubber and lead balls undergo equal changes in momentum
    • B. change in momentum suffered by lead ball is less that of rubber ball
    • C. momentum of rubber ball is less than that of lead ball
    • D. none of these.
      • Discuss

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