A 6.00-kg object oscillates back and forth at the end of a spring whose spring constant is 76.0 N/m. An observer is traveling at a speed of 1.90 × 108 m/s relative to the fixed end of the spring. What does this observer measure for the period of oscillation?

Answer :

Answer:

T = 2.27 sec

Explanation:

the angular frequency of oscillations is given as

[tex]\omega = \sqrt{\frac{k}{m}[/tex]

k = spring constant, m = mass

           [tex]=\sqrt {\frac{76}{6}[/tex]

[tex]\omega = 3.55 rad/sec[/tex]

time period is given as

[tex]T_0 = \frac{2\pi}{\omega}[/tex]

[tex]T_0 = \frac{2\pi}{3.55}[/tex]

T_0 =  1.76 sec

observer speed = 1.90*10^8 m/s

period of pendulum as calculated by observer is

[tex]T = \frac{T_0}{\sqrt{1- \frac{v^2}{c^2}}}[/tex]

  [tex]= \frac{1.76}{\sqrt{1- \frac{(1.90*10^8)^2}{(3*10^8)^2}}}[/tex]

T = 2.27 sec

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