JEE Advanced 2021 Full Test 2 Paper 2
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SECTION – C (Numerical Answer Type)
This section contains 06 questions. The answer to each question is a NUMERICAL VALUE. For each question, enter the correct numerical value (in decimal notation, truncated/rounded-off to the SECOND DECIMAL PLACE; e.g. XXXXX. XX).
This section contains 06 questions. The answer to each question is a NUMERICAL VALUE. For each question, enter the correct numerical value (in decimal notation, truncated/rounded-off to the SECOND DECIMAL PLACE; e.g. XXXXX. XX).
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Question : 17 of 54
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A metallic hemisphere is having dust on its surface. The sphere is rotated about a vertical axis passing through its centre at angular speed ω = 10 r a d s − 1 . Now the dust is visible only on top 20 % area of the curved hemispherical surface. Radius of the hemisphere is R = 0.1 m . Find the coefficient of friction between the dust particle and the hemisphere [ g = 10 m s − 2 ] .
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