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When a mass of 4 kg is hung from the low...

When a mass of 4 kg is hung from the lower and of a spring.IF elongates by 1cm.(i) What is the force constant of the spring? (ii) If a load of 2kg is hung from the lower end of the spring , then find its elongation.

Text Solution

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(i) We know that, F=kx or, `k=F/x`
Here, `F=4times9.8N,x=1xm=0.01m`
`thereforek=(4times9.8)/0.01=3920N.m^-1`
(ii) We know that , F=kx or ,`x=F/k`
Here, `F=2times9.8N,k=3920N.m^-1`
`thereforex=(2times9.8)/3920=0.005m`
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