(4%) Problem 11: A certain spring has a spring constant k1 = 620 N/m as the spring is stretched from x = 0 to x; = 39 cm. The spring constant then changes to k2 = 390 Mm as the spring is stretched to x2 = 67 cm. From :52 = 67 cm to :53 = 94 cm the spring force is constant at F3 = 105 N. 20% Part (:1) Which of the following graphs represents the force on the spring as a function of displacement? V Correct! $2 20% Part (b) Use the area under the curve to calculate the work, in joules, necessary to stretch the spring from x = 0 to x]. Grade Summary W061 : 039' Deductions Potenti 100 9% sin() cos() tan() Submissions Attempts remaining: 7 cotanO acosO {7 PM anempt) atanO 5111110 detailed view 1 coshO tanh() cotanhO 2 Degrees O Radians 3 Submit Hint ' I give up! Hints: deduction per hint. Hints remaining: i Feedback: deduction per feedback. Submission History AH Dale (intent ur'r display-d in Crnlrui Standard Trmr Red submission date times t'mt'r'tulc- [my wart Date Time Answer Hints Feedback I May 24, 2023 12:26 PM W0) : 15.29 2 May 24, 2023 12:27 PM W04} = 1528 3 May 24, 2023 12:39 PM Wat.1 = 013900 $3 20% Part (c) Write an equation for the work done in stretching the spring from x} to x2. W11? : 1f2 1:2(d)2 X Altcmpts Remain $2 20% Part (d) Calculate the work done, in joules, in stretching the spring from x] to 3:2. Wyz = .1523 X Attempts Remain 5 20% Part (e) Calculate the work, in joules, necessary to stretch the spring from x = O to x 3