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Standard XII

Physics

Angle of Friction

An insect cra...

Question

An insect crawls up a hemispherical surface very slowly, figure. The coefficient of friction between the insect and the surface is $1 / 3$ . If the line joining the center of the hemispherical surface to the insect makes an angle $α$ , the maximum possible value of $α$ is given by

Cot ∝ = 3

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Sec ∝= 3

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Coses ∝ =3

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None of these

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Solution

The correct option is A
Cot ∝ = 3

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An insect crawls up a hemispherical surface very slowly, figure. The coefficient of friction between the insect and the surface is 1/3. If the line joining the center of the hemispherical surface to the insect makes an angle α, the maximum possible value of α is given by

The correct option is A Cot ∝ = 3

An insect crawls up a hemispherical surface very slowly, figure. The coefficient of friction between the insect and the surface is $1 / 3$ . If the line joining the center of the hemispherical surface to the insect makes an angle $α$ , the maximum possible value of $α$ is given by

The correct option is A
Cot ∝ = 3