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If the earth were a homogeneous sphere o...

If the earth were a homogeneous sphere of radius R and a straight hole bored in it through its centre, show that a body dropped into the hole will execute SHM and find its time period.

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  13. A oscillator of mass 10kg has a velocity of 5 ms^(-1) after 1 second o...

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  14. A particle executes SHM of period 8 seconds. After what time of its pa...

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