Physics, 13.01.2020 21:31, cylertroutner
Adisk, with a radius of 0.30 m, is to be rotated like a merry-go-round through 800 rad, starting from rest, gaining angular speed at the constant rate α1 through the first 400 rad and then losing angular speed at the constant rate α1 until it is again at rest. the magnitude of the centripetal acceleration of any portion of the disk is not to exceed 405 m/s2. (a) what is the least time required for the rotation? (b) what is the corresponding value of α1?
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Adisk, with a radius of 0.30 m, is to be rotated like a merry-go-round through 800 rad, starting fro...
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