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Weight of a body of mass m decreases by ...

Weight of a body of mass m decreases by 1% when it is raised to height h above the earth’s surface. If the body is taken to a depth h in a mine, change in its weight is:

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Let.f be the frequency of fork.
The wire frequency would be `(f+-10)`
In case of a wire under tension `f prop sqrt(T)`
`:.(f-10)/(f)=sqrt((129.6)/(160))` on simplification f=100 Hz
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