Category: Engineering Mechanics

A. maximum when it acts at the center of gravity of a body
B. different at different points in its line of action
C. the same at every point in its line of action
D. minimum when it acts at the C.G. of the body
E. none of the above

A. introduce internal stresses
B. balance the other forces acting on it
C. retard its motion
D. change its motion
E. all of the above

A. downwards at its upper end
B. upwards at its upper end
C. perpendicular to the wall at its upper end
D. zero at its upper end
E. none of the above

A. coefficient of friction
B. angle of friction
C. angle of repose
D. sliding friction
E. friction resistance

A. two members with unknown forces of the frame
B. three members with unknown forces of the frame
C. four members with unknown forces of the frame
D. three members with known forces of the frame
E. four members with two known forces

A. bodies having relative motion
B. two dry surfaces
C. two lubricated surfaces
D. solids and liquids
E. electrically charged particles

A. 3t2-lt
B. 3t2+2t
C. 6f-8
D. 6f-4
E. 6t2-8t

A. tangent of angle between normal-reaction and the resultant of normal reaction and limiting friction
B. ratio of limiting friction and normal reaction
C. the friction force acting when the body is just about to move
D. the friction force acting when the body is in motion
E. minimum force of friction

A. magnitude
B. direction
C. point of application
D. all of the above
E. none of the above

A. reducing the problem of kinetics to equivalent statics problem
B. determining stresses in the truss
C. stability of floating bodies
D. designing safe structures
E. solving kinematic problems