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A block of mass 'm' is attached to a spr...

A block of mass 'm' is attached to a spring and is placed on a platform as shown in the figure, and the spring at this stage remains in a relaxed stage. When supporting platform is suddenly removed the mass begins to oscillate and moves down to a lowest position of 5 cm from its initial position. Then calculate the time taken by block to reach a height of 3 cm from its lowest position?

Text Solution

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`(pi)/(40) + (1)/(20) sin^(-1) (1//5)`
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