A spring of spring constant 5 xx 10^(3) N/m is stretched intially by 5 cm from the unstretched position. The work required to stretch it further by another 5 cm is :

A spring of spring constant 5 xx 10^(3) N/m is stretched intially by 5

1.	A spring of spring constant 5 xx 10^(3) N/m is stretched intially by 5 cm from the unstretched position. The work required to stretch it further by another 5 cm is :
Answer» 6·25 Nm 18·75 Nm 1250 Nm 25·00 Nm. Solution :Work done= change in P.E: of spring `W=1/2K(x_(2)^(2)-x_(1)^(2))` `=1/2 5xx10^(3)(10^(2)-5^(2))xx10^(-4)` `=18.75Nm`? CORRECT CHOICE is (b).

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A spring of spring constant 5 xx 10^(3) N/m is stretched intially by 5 cm from the unstretched position. The work required to stretch it further by another 5 cm is :

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