Engineering Mechanics The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius. 3r/4π 3r/ 8 8r/3 4r/ 3π 3r/4π 3r/ 8 8r/3 4r/ 3π ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The algebraic sum of moments of the forces forming couple about any point in their plane is Constant Both of above are wrong Both of above are correct Equal to the moment of the couple Constant Both of above are wrong Both of above are correct Equal to the moment of the couple ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The forces, whose lines of action are parallel to each other and act in the same directions, are known as Coplanar concurrent forces Like parallel forces Unlike parallel forces Coplanar non-concurrent forces Coplanar concurrent forces Like parallel forces Unlike parallel forces Coplanar non-concurrent forces ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the balls with velocity ‘v’ is made to strike the second ball. Both the balls after impact will move with a velocity v v/8 v/4 v/2 v v/8 v/4 v/2 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to Twice the area of the triangle Half the area of the triangle None of these Area of the triangle Twice the area of the triangle Half the area of the triangle None of these Area of the triangle ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be Maximum Infinity Zero Minimum Maximum Infinity Zero Minimum ANSWER DOWNLOAD EXAMIANS APP
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