A. same
B. half
C. two times
D. four times
E. none of the above
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. rubber
B. plastic
C. brass
D. steel
E. glass
A. towards the wall at its upper end
B. away from the wall at its upper end
C. upwards at its upper end
D. downwards at its upper end
E. none of the above
A. one point
B. two points
C. plane
D. perpendicular planes
E. different planes
A. more inclined when moving
B. less inclined when moving
C. more inclined when standing
D. less inclined when standing
E. none of the above
A. same in both cases
B. zero in first case
C. different in both cases
D. data are not sufficient to determine same
E. none of the above