Question

Which of the following is correct

• A. Angle of friction is defined as the angle between the normal reaction force and the resultant force of normal reaction force and friction when an object just begins to move.
• B. Angle of repose is defined as the minimum angle of an inclined plane which causes an object to slide down the plane.
• C. Angle of friction is defined as the minimum angle of an inclined plane which causes an object to slide down the plane.
• D. Angle of repose is defined as the angle between the normal reaction force and the resultant force of normal reaction force and friction when an object just begins to move.

Answer 1

Answer: (A), (B)

The correct options are
A Angle of friction is defined as the angle between the normal reaction force and the resultant force of normal reaction force and friction when an object just begins to move.
B

Angle of repose is defined as the minimum angle of an inclined plane which causes an object to slide down the plane.

The main difference between angle of friction and angle of repose is that the angle of friction is defined as the angle between the normal reaction force and the resultant force of normal reaction force and friction when an object just begins to move, whereas the angle of repose is defined as the minimum angle of an inclined plane which causes an object to slide down the plane.