Question

an object starts sliding along an inclined surface at the angle above the horizontal 30° what is the coefficient of static friction between the object and the surface​

Answer 1

Answer:

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Class 11>>Physics>>Laws of Motion>>Motion Along a Rough Inclined Plane>>An object placed on an inclined plane st

Question

An object placed on an inclined plane starts sliding when the angle of inclination becomes ∝. The coefficient of static friction between the block and object is 31 then∝is

A

30∘

B

60∘

C

45∘

D

90∘

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Solution

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Correct option is A)

When an object starts sliding at some angle, then there two forces will acts i.e. force of gravity and frictional force such that,

F=mgsinα

N=mgcosα

F=kN

Where k is coefficient of static friction.

mgsinα=kmgcosα

cosαsinα=31

tanα=tan30

α=300

Explanation:

hope it helps you buddy!.