A body will begin to move down an inclined plane, if the angle of inclination of the plane is ________ the angle of friction.
A. Equal to
B. Less than
C. Greater than
D. None of these
Answer: Option C
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A body on an inclined plane just tends to slide down if the angle of inclination is equal to the angle of friction because when angle of inclination is equal to angle of friction, the component of weight parallel to the plane is just sufficient to overcome the frictional force.