Related Questions

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
Plane P take off at 2:00 am and flies at a constants speed of Xmph. Plane Q takes off at 3:30 am and flies the same forte as plane p but travels at a constant X, how many hours after 3:30 am will plane Q overtake plan P?
A 1.5x/y +0.5
B 2
C 4
D 5
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
Coplanar non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.
A Meet
B Do not meet
C Either ‘A’ or ‘B’
D None of these
The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplanar concurrent forces.
A Lie
B Do not lie
C Either A or B
D None of these
If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either
A Meet in a point
B Be all parallel
C At least two of them must meet
D All the above are correct
The necessary condition for forces to be in equilibrium is that these should be
A Coplanar
B Meet at one point
C Both (A) and (B) above
D All be equal
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
When a system changes its state from one equilibrium state to another equilibrium state, then the path of successive states through which the system has passed, is known as
A Thermodynamic law
B Thermodynamic process
C Thermodynamic cycle
D None of these

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