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Answer to Question #41351 in Mechanics | Relativity for promise

Question #41351
The equation of motion for a particular mass at the end of a spring is
x=0:40cos(0:70t−30)
m. For this oscillation, find the amplitude and the period.

a. 40 cm; 8.97 s
b. 20 cm ; 4.75s
c. 40 m; 9.87 s
d. 20 m; 4.75 s
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