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  • Question

  • The following factor affects the orbit of a satellite up to an altitude of 720 km from the earth's surface


  • Options
  • A. uneven distribution of the gravitational field
  • B. gravity of the sun and the moon
  • C. aerodynamic forces
  • D. none of these.

  • Correct Answer
  • none of these. 

    • Applied Mechanics problems

    Search Results

    • 1. The ends of a string weighing w/metre are attached to two points at the same horizontal level. If the central dip is very small, the horizontal tension of the string throughout is

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. To avoid bending action at the base of a pier,

    • Options
    • A. suspension and anchor cables are kept at the same level
    • B. suspension and anchor cables are fixed to pier top
    • C. suspension cable and anchor cables are attached to a saddle mounted on rollers on top of the pier
    • D. none the these.
      • Discuss
    • 3. If the horizontal range is 2.5 times the greatest height, the angle of projection of the projectile, is

    • Options
    • A. 57°
    • B. 58°
    • C. 59°
    • D. 60°.
      • Discuss
    • 4. For a body moving with simple harmonic motion, the number of cycles per second, is known as its

    • Options
    • A. oscillation
    • B. amplitude
    • C. periodic time
    • D. beat
    • E. frequency.
      • Discuss
    • 5. One end of a light string 4 m in length is fixed to a point on a smooth wall and the other end fastened to a point on the surface of a smooth sphere of diameter 2.25 m and of weight 100 kg. The tension in the string is

    • Options
    • A. 17.5 kg
    • B. 19.5 kg
    • C. 22.5 kg
    • D. 25 kg.
      • Discuss
    • 6. A spring scale in a stationary lift shows a reading of 60 kg for a man standing on it. If the lift starts descending at an acceleration of g/5, the scale reading would be

    • Options
    • A. 48 kg
    • B. 60 kg
    • C. 72 kg
    • D. none of these.
      • Discuss
    • 7. Lami's theroem states that

    • Options
    • A. three forces acting at a point are always in equilibrium
    • B. if three forces acting on a point can be represented in magnitude and direction by the sides of a triangle, the point will be in the state of equilibrium
    • C. three coplaner forces acting at a point will be in equilibrium, if each force is proportional to the sine of the angle between the other two
    • D. three coplaner forces acting at a point will be in equilibrium if each force is inversely proportional to the sine of the angle between the other two
    • E. none of these.
      • Discuss
    • 8. Which one of the following laws is not applicable to a simple pendulum?.

    • Options
    • A. The time period does not depend on its magnitude
    • B. The time period is proportional to its length l
    • C. The time period is proportional to l where l is length
    • D. The time period is inversely proportional to g where g is the acceleration due to gravity.
      • Discuss
    • 9. For the system of the loads shown in below figure, the time required for the 6.6 kg load to fall on the edge, is

    • Options
    • A. 1 sec.
    • B. 2 sec.
    • C. 3 sec.
    • D. 4 sec.
    • E. 5 sec.
      • Discuss
    • 10. If two forces acting at a point are in equilibrium, they must be equal in magnitude and their line of action must be along

    • Options
    • A. the same line in the same sense
    • B. the same line in opposite sense
    • C. the perpendicular to both the lines
    • D. none of these.
      • Discuss

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