The answer are All A.
hello!
i dont know the first question but for the second one,
KE spring= 1/2 k x^2
so KE spring= 1/2* 1* (0.5)^2
we use 0.5 m because we have to convert it from cm to m.
so in the end the KE spring .125 which is equal to the work
let me know if i did something wrong
hope this helps
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For the first question:
Centripetal Accelaration = w^2 * r
W=6000 rpm (2Pi/60) = (200Pi) rad/sec
Ac=(200*pi)^2 * 0.125 ~~ 50,000=5,000g
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