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I Review | Constants Consider a spring that does not obey Hooke's law very faithfully. One end of the spring is fixed. To keep the spring stretched or compressed an amount x, a force along the x-axis with X-component F, = kx – bx? + cx³ must be applied to the free end. Here k = 100 N/m, b = 700 N/m² , and c = Part A How much work must be done to stretch this spring by 0.050 m from its unstretched length? 12, 000 N/m³. Note that x > 0 when the spring is stretched and x < 0 Express your answer in joules. when it is compressed. ΑΣΦ ? W = J Submit Request Answer Part B How much work must be done to compress this spring by 0.050 m from its unstretched length? Express your answer in joules. ΑΣΦ W = J Submit Request Answer
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Transcribed Image Text:I Review | Constants Consider a spring that does not obey Hooke's law very faithfully. One end of the spring is fixed. To keep the spring stretched or compressed an amount x, a force along the x-axis with X-component F, = kx – bx? + cx³ must be applied to the free end. Here k = 100 N/m, b = 700 N/m² , and c = Part A How much work must be done to stretch this spring by 0.050 m from its unstretched length? 12, 000 N/m³. Note that x > 0 when the spring is stretched and x < 0 Express your answer in joules. when it is compressed. ΑΣΦ ? W = J Submit Request Answer Part B How much work must be done to compress this spring by 0.050 m from its unstretched length? Express your answer in joules. ΑΣΦ W = J Submit Request Answer
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