Related Questions

If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
A 30°
B 60°
C 90°
D 120°
Three forces which act on a rigid body to keep it in equilibrium. The forces must be coplanar and
A Concurrent
B Parallel
C Concurrent parallel
D None of these
For any system of coplanar forces, the condition of equilibrium is that the
A Algebraic sum of the horizontal components of all the forces should be zero
B Algebraic sum of the vertical components of all the forces should be zero
C Algebraic sum of moments of all the forces about any point should be zero
D All of the above
The condition of equilibrium for any system of forces in a plane is
A That polygon of forces must close
B That resultant couple must be zero
C Both (A) and (B)
D None of the above
In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of
A Concentrations
B Chemical potentials
C Activity co-efficients
D Mass transfer co-efficients
The necessary condition of equilibrium of a body is:
A Algebraic sum of horizontal components of all the forces must be zero
B Algebraic sum of vertical components of all the forces must be zero
C Algebraic sum of the moments of the forces about a point must be zero
D All (A), (B) and (C)
The necessary condition for phase equilibrium in a multiphase system of N components is that the
A Chemical potentials of a given component should be equal in all phases
B Chemical potentials of all components should be same in a particular phase
C Sum of the chemical potentials of any given component in all the phases should be the same
D None of these
The necessary and sufficient condition for equilibrium between two phases is
A The concentration of each component should be same in the two phases
B The temperature of each phase should be same
C The pressure should be same in the two phases
D The chemical potential of each component should be same in the two phases
 একটি ফার্মের স্বল্পকালীন ভারসাম্যে প্রয়োজনীয় শর্ত কোনটি? (Which one is the necessary condition for the short-run equilibrium of a firm?)
A MR > AR
B MR > MC
C MR = MC
D Slope of MC > Slope of MR
Two forces of magnitude 3m and 2m respectively have a resultant R. if the first force is doubled, the magnitude of the resultant is doubled.Find the angle betuween forces?
A 90°
B 120°
C 135°
D 145°

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