A rigid body, under the action of external forces, can be replaced by two masses placed at a fixed distance apart. The two masses form an equivalent dynamical system, if

A. The sum of the two masses is equal to the total mass of body

B. The centre of gravity of the two masses coincides with that of the body

C. The sum of mass moment of inertia of the masses about their centre of gravity is equal to the mass moment of inertia of the body

D. All of the above

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. The transmissibility, for all values of damping factor, will be less than unity, if ω/ωn is
  2. The frictional torque transmitted in a flat pivot bearing, considering uniform pressure, is (where μ…
  3. The number of centers in a crank driven slider crank mechanism is
  4. The two links OA and OB are connected by a pin joint at O. If the link OA turns with angular velocity…
  5. In a mechanism, the fixed instantaneous centres are those centres which
  6. In railway axle boxes, the bearing used is
  7. The velocity of the belt for maximum power is (where m = Mass of the belt in kg per metre length)
  8. The Grubler's criterion for determining the degrees of freedom (n) of a mechanism having plane motion…
  9. The motion between a pair which takes place in __________ is known as incompletely constrained motion.
  10. Which of the following is a higher pair?
  11. The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed.
  12. Which of the following statement is correct for gears?
  13. The frequency of oscillation of a compound pendulum is
  14. In under damped vibrating system, if x₁ and x₂ are the successive values of the amplitude…
  15. In the two rotor system as shown in the below figure (I₁ < I₂), a node of vibration is…
  16. For low and moderate speed engines, the cam follower should move with
  17. In a Hartnell governor, the lift of the sleeve is given by (where r₁ and r₂ = Max. and…
  18. In a multiple V-belt drive, when a single belt is damaged, it is preferable to change the complete set…
  19. Which of the following is an inversion of a double slider crank chain?
  20. The balancing of a rigid rotor can be achieved by appropriately placing balancing masses in
  21. Davis steering gear consists of
  22. In a cone pulley, if the sum of radii of the pulleys on the driving and driven shafts is Constant, then
  23. When the two elements of a pair have a surface contact when relative motion takes place and the surface…
  24. The sensitiveness of the governor __________ as the speed range decreases.
  25. The length of a simple pendulum which gives the same frequency as the compound pendulum, is
  26. If D₁ and D₂ be the diameters of driver and driven pulleys, then belt speed is proportional…
  27. The example of completely constrained motion is a
  28. If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius…
  29. In higher pair, the relative motion is
  30. The advantage of the piston valve over the slide valve is that in the former case