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  • Question

  • The centre of gravity of a triangle is at the point where three


  • Options
  • A. medians of the triangle meet
  • B. perpendicular bisectors of the sides of the triangle meet
  • C. bisectors of the angle of the triangle meet
  • D. none of these.

  • Correct Answer
  • medians of the triangle meet 

    • Applied Mechanics problems

    Search Results

    • 1. The reaction at the support A of the beam shown in below figure is

    • Options
    • A. 2 t
    • B. 5.8 t
    • C. 0.2 t
    • D. 3.5 t.
      • Discuss
    • 2. The maximum velocity of a body vibrating with a simple harmonic motion of amplitude 150 mm and frequency 2 vibrations/sec, is

    • Options
    • A. 188.5 m/sec
    • B. 18.85 m/sec
    • C. 1.885 m/sec
    • D. 0.18845 m/sec.
      • Discuss
    • 3. A string of length 90 cm is fastened to two points A and B at the same level 60 cm apart. A ring weighing 120 g is slided on the string. A horizontal force P is applied to the ring such that it is in equilibrium vertically below B. The value of P is :

    • Options
    • A. 40 g
    • B. 60 g
    • C. 80 g
    • D. 100 g.
      • Discuss
    • 4. The masses of two balls are in the ratio of 2 : 1 and their respective velocities are in the ratio of 1 : 2 but in opposite direction before impact. If the coefficient of restitution is , the velocities of separation of the balls will be equal to

    • Options
    • A. original velocity in the same direction
    • B. half the original velocity in the same direction
    • C. half the original velocity in the opposite direction
    • D. original velocity in the opposite direction
      • Discuss
    • 5. If three rigid rods are hinged together to form a triangle and are given rotary as well as translatory motion, the number of instantaneous centres of the triangle, will be

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
    • E. 5.
      • Discuss
    • 6. The resultant of two forces P and Q acting at an angle ?, is

    • Options
    • A. P2 + Q2 + 2P sin ?
    • B. P2 + Q2 + 2PQ cos ?
    • C. P2 + Q2 + 2PQ tan ?
    • D.
    • E.
      • Discuss
    • 7. The total time of collision and restitution of two bodies, is called

    • Options
    • A. time of collision
    • B. period of collision
    • C. period of impact
    • D. all the above.
      • Discuss
    • 8. A cable loaded with 0.5 tonne per horizontal metre span is stretched between supports in the same horizontal line 400 m apart. If central dip is 20 m, the minimum tension in the cable, will be

    • Options
    • A. 200 tonnes at the centre
    • B. 500 tonnes at the centre
    • C. 200 tonnes at the right support
    • D. 200 tonnes at the left support.
      • Discuss
    • 9. A projectile is thrown at an angle a to the horizontal with ? velocity v. It will have the maximum centripetal acceleration

    • Options
    • A. at the start
    • B. at the top of the trajectory
    • C. as it strikes the ground
    • D. else where.
      • Discuss
    • 10. The length of a Second's pendulum, is

    • Options
    • A. 99.0 cm
    • B. 99.4 cm
    • C. 100 cm
    • D. 101 cm
    • E. 101.10 cm.
      • Discuss

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