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29. An insect crawls up a hemispherical surfacevery slowly (see the figure). The coefficient offriction between the insect and the surface is1/3. If the line joining the centre of thehemispherical surface to the insect makes anangle α with the vertical, the maximumpossible value of a is given by(a) cot α = 3(c) sec a 3(b) tan α-3(d) cosec a 3 |
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Answer» option a thank's 😃 |
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