A person stands on a platform which oscillates up and down simple harmonically. If he stands on the weighing machine, the reading of the machine will be minimum.

at the highest point

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at the lowest point

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at the equilibrium position

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Reading is same at all positions

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Solution

The correct option is A at the highest point
At highest point acceleration will be maximum ,in downward direction so, pseudo force on the person will be maximum in upward direction so, normal reaction at the weighing machine will decrease maximum , and weighing machine needs normal reaction,then only it will show maximum reading.

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Q. A person normally weighing

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stands on a platform which oscillates up and down simple harmonically with a frequency

2 H z

and an amplitude

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