Trypanomic problem!
In the figure , three
kg ore cars are held at rest on a mine railway using a cable that is parallel to the rails, which are inclined at angle
. The cable stretches
cm just before the coupling between the longer two cars breaks, detaching the lowest car . Assuming that the cable obeys Hooke’s law, find the amplitude (in meters) of the resulting oscillations of the remaining two cars.
The answer is 0.05.
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1 solution
Use the relation stress=Y * strain two times & calculate the new extension at equilibrium. Subtract the obtained value from 15cm. That is your answer & do not forget to write it in S.I. units.