1. Tardigrade
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  4. A vibrating tuning fork is moving slowly and uniformly in a horizontal circular path of radius 8 m. The shortest distance of an observer in same plane from the tuning fork is 9 m. The distance between the tuning fork and observer at the instant when apparent frequency becomes maximum is

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Q. A vibrating tuning fork is moving slowly and uniformly in a horizontal circular path of radius $8\, m$. The shortest distance of an observer in same plane from the tuning fork is $9 m$. The distance between the tuning fork and observer at the instant when apparent frequency becomes maximum is

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Solution:

The apparent frequency is maximum when relative velocity of approach of tuning fork with respect to observer is maximum
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$O P=\sqrt{17^{2}-8^{2}}=15 \,m$