ORBITAL MECHANICS FOR ENGINEERING
STUDENTS COMPLETE EXAMINATION TEST
QUESTIONS WITH VERIFIED SOLUTIONS
●● Stable equilibrium of a floating body
Answer: For stable equilibrium, the metacenter must be above the center
of gravity.
●● Properties of liquids
Answer: Liquids cannot be compressed and do not occupy a definite
shape.
●● Ideal fluid
Answer: An ideal fluid is frictionless and incompressible.
●● Specific weight of water
Answer: The specific weight of water is 1000 kg/m³ at 4°C temperature
and mean sea level.
●● Cohesion vs. Adhesion
Answer: If cohesion between the molecules of a fluid is greater than
adhesion to glass, the fluid will rise higher than the surface.
, ●● Condition for neutral equilibrium
Answer: Neutral equilibrium occurs when the metacenter is at the center
of gravity.
●● Practical fluids
Answer: Practical fluids possess viscosity, surface tension, and
compressibility.
●● Specific weight of sea water
Answer: The specific weight of sea water is greater than that of pure
water due to dissolved salts.
●● Newtonian fluids
Answer: Water is classified as a Newtonian fluid.
●● Barometers
Answer: Barometers are used to measure atmospheric pressure.
●● Molecules of fluids
Answer: Molecules of fluids are attracted due to cohesion.
●● Falling drops of water
Answer: Falling drops of water become spheres due to surface tension.
STUDENTS COMPLETE EXAMINATION TEST
QUESTIONS WITH VERIFIED SOLUTIONS
●● Stable equilibrium of a floating body
Answer: For stable equilibrium, the metacenter must be above the center
of gravity.
●● Properties of liquids
Answer: Liquids cannot be compressed and do not occupy a definite
shape.
●● Ideal fluid
Answer: An ideal fluid is frictionless and incompressible.
●● Specific weight of water
Answer: The specific weight of water is 1000 kg/m³ at 4°C temperature
and mean sea level.
●● Cohesion vs. Adhesion
Answer: If cohesion between the molecules of a fluid is greater than
adhesion to glass, the fluid will rise higher than the surface.
, ●● Condition for neutral equilibrium
Answer: Neutral equilibrium occurs when the metacenter is at the center
of gravity.
●● Practical fluids
Answer: Practical fluids possess viscosity, surface tension, and
compressibility.
●● Specific weight of sea water
Answer: The specific weight of sea water is greater than that of pure
water due to dissolved salts.
●● Newtonian fluids
Answer: Water is classified as a Newtonian fluid.
●● Barometers
Answer: Barometers are used to measure atmospheric pressure.
●● Molecules of fluids
Answer: Molecules of fluids are attracted due to cohesion.
●● Falling drops of water
Answer: Falling drops of water become spheres due to surface tension.
