Question

The angle between the direction of applied forces and the main plough (or blade of plough), in a wooden plough is __________
A. greater than `90^(@)`
B. `90^(@)`
C. `60^(@)`
D. less than `90^(@)`

Answer 1

Correct Answer - D
From the adjacent figure, it is clear that the angle is less than `90^(@)`.if the angle is `90^(@)`, then it is difficult to pull the plough, and hence the angle is always acute.