Mary Susan Torley, 60, from Workington, was found guilty by West Allerdale magistrates, of assaulting a resident in her care in October.
The 54-year-old resident with onset dementia was dragged by her clothing against her will causing her to fall.
Torley was sentenced to a monitored curfew for 12 weeks, Â£620 costs and a Â£60 victim surcharge.
She cared for three vulnerable adults at a private care facility, which has since closed, on Windmill Close in Cockermouth.
A co-worker in the home witnessed the incident and reported it to Cumbria Police.

Laird shot a second round 68 in San Diego to stay within reach of KJ Choi and Gary Woodland, who were nine under.
England's Rose and Paul Casey missed the cut by a shot, along with American and world number four Rickie Fowler.
American Mickelson was a further shot behind, while Australia's defending champion Day missed out by three.
World number two Day's preparations were hampered by illness and the he missed the cut for the first time in nearly eight months.
Mickelson finished with three straight bogeys as his challenge was ended.
"I think I tried to force the issue a little bit," he said. "When I wasn't under par early, I kind of started to press a little bit. But that stuff happens."

Sexual orientation details are stored by the MoD but kept anonymous, and recruits have the option to "prefer not to say".
A spokesman said the MoD, which introduced the new measure in November, "encourages diversity at all levels".
Openly-gay soldiers have been allowed to serve since 2000.
The spokesman said: "The MoD proudly encourages diversity at all levels. Service personnel are now encouraged to declare their sexual orientation.
"Although this is not mandatory, collecting this data will give us a better understanding of the composition of our armed forces and help ensure our policies and practices fully support our personnel."
Recruits are also invited to say how open they feel they can be regarding their sexual orientation.
The gathered information is not visible on individual personal records or to chain of command or managers, with names removed before the data is collated to make sure no one can be identified.
The MoD said there was no specific drive to recruit more lesbian, gay or bisexual personnel.
A private care home worker who assaulted a vulnerable resident with Down's Syndrome has been sentenced.
[NEXT_CONCEPT]
Scotland's Martin Laird moved to within two shots of the lead as Jason Day, Phil Mickelson and Justin Rose missed the cut at the Farmers Open.
[NEXT_CONCEPT]
The Ministry of Defence is now asking recruits to the armed forces whether they are gay in a bid to improve diversity in the military.