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Part A For forced oscillation at resonance (w = wo), what is the value of the phase angle o in x = Ao sin(wt +60)? Express your answer in terms of the variables A0, wo, and appropriate constants. Φο = 0 = 0 Submit Previous Answers Correct Part B What, then, is the displacement at a time when the driving force Fext is a maximum? Express your answer in terms of the variables A0, wo, and appropriate constants. EVO AL ? x xь 8 VX 4x x X1 x 10 A Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining The correct answer does not depend on: A. Part C What, then, is the displacement at a time when Fext = 0? Express your answer in terms of A. If there is more than one answer, separate them by a comma. ΟΙ ΑΣφ ? IF 0 = Submit Request Answer Part D What is the phase difference in degrees) between the driving force and the displacement in this case? Express your answer to two significant figures and include the appropriate units. 201 μΑ ? Ω % A . O Δφ = 180 Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining