Often one of the most challenging part of doing a research paper is choosing a workable topic, one that is not too broad or too narrow and answers a significant research question. Only you in consultation with your professor can determine what works. However, the library has a number of useful resources that will hopefully get you started in this search.
One of the best places to start your search for a topic is browsing relevant reference databases, linked below.
Your Textbook can be a great source for finding topics. What interests you in class readings?
Faculty - consult with faculty in the Social Work Department to get ideas.