A 4.0kg block extends a spring 16cm from its unstretched position.The block is removed and a 0.50Kg body is hung from the same spring.If the spring is stretched and released,the period of oscillation is :(adsbygoogle = window.adsbygoogle || []).push({});

a)0.28s

b)0.02s

c)0.42s

My Work :

T = 2pi/w

T = 2pi*sqrt{Mass Totall/K}

I need to find K .

By applying law of conservaton of energy :

EMi = EMf

0.5K(16*10^-2)^2 = -mgh

h = 16*10^-2 ? ?

Any help please.

Thank you

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# Homework Help: Mechanical Oscillation

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