When a spring is compressed, its mass increases. Indicate ...

[casperchen82]

When a spring is compressed, its mass increases.
 
  Indicate whether the statement is true or false

Question 2

The position of an air-track cart that is oscillating on a spring is given by x = (12.4 cm) cos(6.35 s-1)t. At what value of t after t = 0 s is the cart first located at x = 8.47 cm?
 
  A) 4.34 s
  B) 0.108 s
  C) 0.129 s
  D) 7.39 s
  E) 7.75 s

[Eazy416]

Answer to Question 1

TRUE

Answer to Question 2

C

[casperchen82]

YES! Correct, THANKS for helping me on my review

[ebonylittles]

Thanks for the timely response, appreciate it