Laws of Motion 3 Question 2
2. A block kept on a rough inclined plane, as shown in the figure, remains at rest upto a maximum force
does not move the block is
The coefficient of static friction between the block and the plane is
(2019 Main, 12 Jan I)
(Take,
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 2. (b)
Solution:
- Block does not move upto a maximum applied force of
So, equating forces, we have;
or
Similarly, block also does not move upto a maximum applied force of
Now, equating forces, we have
or
Now, solving Eqs. (i) and (ii), we get
and
Dividing, Eqs. (iii) and (iv), we get
