Question

A a mass of 4kg rest on a horizontal plane, the plane is gradually inclined at an angle 37° with the horizontal, the mass just begins to slide. What is the coefficient of static friction between block and surface?​

Answer 1

Answer:

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The friction is 0.96

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Explanation:

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We know that,

Mass m=4kg

angle θ=15  

 

Now, the normal force is

N=mg

N=4×10

N=40N

Now, frictional force always opposes the direction of motion

So, $F_{f}$  =mgcosθ

μN=4×10×cos15

μ×40=40×0.96

μ=0.96

Hence, friction is 0.96.

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