A 2 kg brick begins to slide over a surface which is inclined at an angle of 45° with respect to horizontal axis. The co-efficient of static friction between their surfaces is

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Solution

Q.
A 2 kg brick begins to slide over a surface which is inclined at an angle of 45° with respect to horizontal axis.

The co-efficient of static friction between their surfaces is [2024]

1 1

2 0.5

3 1.7

4 $\frac{1}{\sqrt{3}}$

Ans.
(1)

Slipping starts when, $\tan θ = μ_{s}$ ( $θ$ is angle of respose)

   $μ_{s} = \tan 45^{o}$

   $\Rightarrow μ_{s} = 1$

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