problem 19. os supported by rour sprig of Torse comstant k. What is k for each s
ID: 1660568 • Letter: P
Question
problem 19.
os supported by rour sprig of Torse comstant k. What is k for each spring? a. 6 580 N/m b. 5 850 N/m c. 4 440 N/m d. 3 630 N/m 13.4 Position, Velocity, and Acceleration as a Function of Time A mass on a spring vibrates in simple harmonicmotion at a frequency of4()Hz and an amplitude of 4.0 cm. If a timer is started when its-displacementis a maximom (hence x=4 19, when t+0),what is the speed of the mass when t= 3 s? a. zero b. 0.006 5 m/'s c. 0.015 m/s d. 0.024 m/s 20. An object moving in simple harmonic motion has an amplitude of 0.020 m and a maximur acceleration of 40 m/s. What is the frequency of the system?Explanation / Answer
19) V= w A 2---y2
Y=A coswt = 4 Cos 2/T t
Y= 4 since Cos 24 = 4
Therefore V= 0 sInce A=4, Y = 4
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