(d) As t-> oo (or the time becomes verylarge, the ange betwe vectors tends to a
ID: 1884517 • Letter: #
Question
(d) As t-> oo (or the time becomes verylarge, the ange betwe vectors tends to a simple limiting value. What is it? (5pts) 3. You are in an elevator that starts from the ground and moves up. Its upward displacement as a fiunction of time is given by y()- (1.2m/s')+(0.05m/s') . Your mass is 60kg and you are standing on a scale in the elevator. What is the difference, in kg, of the scale readings at 12s and Os (g9.8m/s') (15pts) lation with an amplitude of 4. A mass-spring system with a mass of 0.5kg undergoes a harmonic oscil 25cm and a period of sec (a period is the time for one complete oscillation). (a) What is the maximum velocity of the mass? (b) What is the maximum acceleration of the mass and how soon after the maximum velocity does it occur? (15pts)Explanation / Answer
(3)
Since the mass is constant at anywhere, so at t =0 s and t = 2 s, the mass is 60 kg.
Hence, the difference in mass is,
delta m = 60 kg - 60 kg = 0 kg.
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