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
Correct Answer: zero at its upper end ✔
Last Updated: January 15, 2019
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
Correct Answer: zero at its upper end ✔
Last Updated: January 15, 2019