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Suppose that 2 ] of work is needed to stretch a spring from its natural length of 30 cm to a length of 41 cm.

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Suppose that 2 ] of work is needed to stretch a spring from its natural length of 30 cm to a length of 41 cm. (a) How much work is needed to stretch the spring from 34 cm to 36 cm? (Round your answer to two decimal places.) (b) How far beyond its natural length will a force of 30 N keep the spring stretched? (Round your answer one decimal place.) cm

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