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[" 3.When a rubber band is stretched by ...

[" 3.When a rubber band is stretched by a "],[" distance "x," it exerts a restoring force of "],[" magnitude "F=ax+bx^(2)," where "a" and "b" are "],[" constants.The work done in stretching the "],[" unstretched rubber band by "L" is (2014Main) "],[[" (a) "aL^(2)+bL^(3)," (b) "1/2(aL^(2)+bL^(3))],[" (c) "(aL^(2))/(2)+(bL^(3))/(3)," (d) "(1)/(2)((aL^(2))/(2)+(bL^(3))/(3))]]

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