A mosquito is sitting on an L.P. record of a gramophone disc rotating on a turn table at 33 
revolution per minute. The distance of the mosquito from the center of the disc is 10 cm. Show that the friction coefficient between the record and the mosquito is greater than 
2 / 81. Take g = 10 m/s 2 .
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
n = 33 
rev/min, 
= 
= 
rad/sec., r = 10 cm = 0.1 m.
for no slipping 
µ 
µ 
µ 
Ans.
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