Oscillating Weight
October 27th, 2009
Oscillating Weight
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 ROLEX oscillating weight for 2030 movement  US $129.50
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what is his speed of A moving observer?
The period of an oscillating weight on a spring measures in a laboratory on earth is 1.80s. A moving observer measures its period as 2.20s. what is his speed(c=3.00x10^8m/s)
Answer 1.72x10^8m/s
i am not sure how to solve this one
Time dilation:
the time for the moving observer is gamma * the proper time.
gamma = 1 / sqrt (1 - (v/c)^2) = observed time / proper time
Solve for your speed:
v = c sqrt (1 - (proper time / observed time)^2)