Strength of Materials
A semi-circular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi-cricular disc and horizontal surface is i. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will

remain horizontal
unpredictable
slant down towards direction of pull
slant up towards direction of pull

ANSWER DOWNLOAD EXAMIANS APP

Strength of Materials
If a rigid body is in equilibrium under the action of three forces, then

these forces are equal
the lines of action of these forces meet in a point
the lines of action of these forces are parallel
the lines of action of these forces meet in a point & the lines of action of these forces are parallel

ANSWER DOWNLOAD EXAMIANS APP

Strength of Materials
In the equation of virtual work, following force is neglected

All of the listed here
reaction of a rough surface of a body which rolls on it without slipping
reaction at a point or an axis, fixed in space, around which a body is con-strained to turn
reaction of any smooth surface with which the body is in contact

ANSWER DOWNLOAD EXAMIANS APP