Mechanical Engineering - Engineering Mechanics - Discussion

I agree the given answer option A is correct.

I think the Answer is option B.

@All.

The angle of friction is right. It is an angle of the base plane to datum for start sliding.

The angle of response is an angle of the body with datum.

Now angle of plane is asked so( A )is right answer.

The correct answer is Angle of Friction.

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.

Angle of friction is the right answer. I agree.

The angle of the inclined plane at which a block resting on it is about to slide down the plane is called the angle of repose, and its value is equal to the angle of friction between the block and the inclined plane.

So, the correct answer is Angle of Repose.