A man normally weighing \( 60 \mathrm{kgf} \) stands on a platform,...

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A man normally weighing \( 60 \mathrm{kgf} \) stands on a platform, which oscillates up and down harmonically at a frequency \( 2 \mathrm{~s}^{-1} \) and an amplitude \( 5 \mathrm{~cm} \). If the weighing machine on the platform gives the man's weight against time, find the minimum and maximum readings, it will show. Take \( g=10 \mathrm{~m} \mathrm{~s}^{-2} \)
\( \mathrm{P} \)
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