Related Questions

A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is $$\tau $$. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be
A $$\frac{\tau }{2}$$
B $$\tau $$
C $$2\tau $$
D $$4\tau $$
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
Non-coplanar concurrent forces are those forces which
A Meet at one point, but their lines of action do not lie on the same plane
B Do not meet at one point and their lines of action do not lie on the same plane
C Meet at one point and their lines of action also lie on the same plane
D Do not meet at one point, but their lines of action lie on the same plane
Coplanar concurrent forces are those forces which
A Meet at one point, but their lines of action do not lie on the same plane
B Do not meet at one point and their lines of action do not lie on the same plane
C Meet at one point and their lines of action also lie on the same plane
D Do not meet at one point, but their lines of action lie on the same plane
Non-coplanar non-concurrent forces are those forces which
A Meet at one point, but their lines of action do not lie on the same plane
B Do not meet at one point and their lines of action do not lie on the same plane
C Do not meet at one point but their lines of action lie on the same plane
D None of the above
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
Forces are called coplanar when all of them acting on body lie in
A One point
B One plane
C Different planes
D Perpendicular planes
A system of coplanar forces acting on a rigid body can be reduced to
A One force only
B One couple only
C One force and one couple only
D None of the above
Varingon's theorem of moments states that if a number of coplanar forces acting on a particle are in equilibrium, then
A Their algebraic sum is zero
B Their lines of action are at equal distances
C The algebraic sum of their moments about any point in their plane is zero
D The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point

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