An insect crawls up a hemispherical surface very slowly (see the figure). The coefficient…
Physics · JEE Main · NTA Exams — Laws of Motion
An insect crawls up a hemispherical surface very slowly (see the figure). The coefficient of friction between the insect and the surface is \(\frac{1}{3}\). If the line joining the centre of the hemispherical surface to the insect makes an angle α with the vertical, the maximum possible value of α is given by:
- cot \(\alpha\) = 3
- tan \(\alpha\) = 3
- sec \(\alpha\) = 3
- cosec \(\alpha\) = 3
Answer
(A) cot = 3
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