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Rotation about a fixed point --- dynamics?
Two strings are hanging vertically from the ceiling and are attached to the ends of a massless rod, which is horizonal. there are two point masses that are positioned on the rod.
If one of the supporting strings is cut would the tension in the uncut string immediately after the cut be smaller if both masses are positioned in the center of the rod or if one is on each end?
I think there would still be some tension in the uncut string because before the other rope was cut there was tension
1 Answer
- BrambleLv 71 decade agoFavorite Answer
If one mass (m) is at each end, then the tension in the uncut string just after cutting the other, will be mg or 9.81m N.
If both masses are at the centre of the rod, then they will initially begin to fall vertically downwards with acceleration g, leaving no force in the uncut string.
So tension in string is less with both masses in the centre.
