If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle ? with horizontal, the perimeter of the canal is
Options
A. R(? + tan ?)
B. 2R(? + tan ?)
C. R(? + cos ?)
D. 2R(? + cos ?)
E. none of these.
Correct Answer
2R(? + cos ?)
More questions
1. Kinetic friction may be defined as
Options
A. friction force acting when the body is just about to move
B. friction force acting when the body is in motion
C. angle between normal reaction and resultant of normal reaction and limiting friction
D. ratio of limiting friction and normal reaction.