A runner is carrying a ladder with length L. The barn on the right has length...
A runner is carrying a ladder with length L. The barn on the right has length 0.5L and has two doors, left and right.
(a) When the runner goes through, the farmer on the right wants to close the barn doors simultaneously so that the ladder is entirely in the barn. How fast should the runner go in order for this to happen?
(b) In the runner’s frame of reference, the barn is shorter, so how is it possible that the ladder can be kept entirely in the barn?
Homework Answers
The solution is given in the attached image.
The explanation is given.
The assumptions made are justified.
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