Why it is not possible to put a noun object after the particle when the object refers to a person with some phrasal verbs ? Is there a specific rule?
Solution 1:
This is a mixed bag of constructions. Some are phrasal verbs, so particle shift works:
pull the sweater off ~ pull off the sweater
knock the vase over ~ knock over the vase
knock the child over ~ knock over the child
(this is grammatical but odd -- prototypic uses of knock over are with erect objects, not people)
and some are not phrasal verbs, so particle shift doesn't work:
ring Bill back ~ *ring back Bill
let Bill back in ~ *let back Bill in ~ *let back in Bill
let Bill off the hook ~ *let off Bill the hook ~ *let off the hook Bill