Question

-W12a roblem 11.20 An object with mass 4.0 kg is executing simple harmonic motion, attached to a spring with spring constant 260 N/m. When the object is 0.025 m from its equilibrium position, it is moving with a speed of 0.40 m/s. Part A Calculate the amplitude of the motion Express your answer to two significant figures and include the appropriate units. '! HAO ? A = Value Units Submit Request Answer Part B Calculate the maximum speed attained by the object Express your answer to two significant figures and include the appropriate units. Value Units Submit Best Answer Provide Feedback

Answer 1

For spring W = = 1 200 = 8.obrad/sec v=w [A²x2 =) v² w 2 (A²x²) 604) = 260 (A? (0.025)) 0.00246 = A? .000625 2 A=.003085 A= 0.0555 m. Maximum speedia Vmax = Aw= 0.0555*8.06 m/sec 1. Ymax = 0448m/sec