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  • A body of weight W is placed on an inclined plane. The angle made by the inclined plane with the horizontal, when the body is on the point of moving down is called  <div class='qna-

A body of weight W is placed on an inclined plane. The angle made by the inclined plane with the horizontal, when the body is on the point of moving down is called
 

Option: 1

angle of friction


Option: 2

angle of inclination


Option: 3

angle of repose

 


Option: 4

angle of limiting friction


Answers (1)

best_answer

 

 

Angle of Repose -

 

The angle of repose is defined as the angle of the inclined plane with horizontal such that the body is placed on it just begins to slide.

Here α is the angle of repose, F is the limiting friction, R is a normal reaction.

From the figure,

R=mgcosα 

F=mgsinα  and

we know that

\frac{F}{R}=tan \alpha

\frac{F}{R}=\mu_{s}=tan\theta=tan \alpha

?tan α= μs ⇒ α = tan-1(μs)

 

So, angle of repose is the correct answer.

Posted by

Gautam harsolia

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