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Calc 2
Suppose that 5 J of work is needed to stretch a spring from its natural length of 32 cm to a length of 49 cm.
a) How much work (in J) is needed to stretch the spring from 40 cm to 44 cm? (Round your answer to two decimal places.)
------J
b) How far beyond its natural length (in cm) will a force of 20 N keep the spring stretched? (Round your answer one decimal place.)
------cm

Calc 2 Suppose that 5 J of work is needed to stretch a spring from its natural length of 32 cm to a length of 49 cm a How much work in J is needed to stretch th class=


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