the centripetal force equation is F=mv2/r the velocit peed for uniform circular motion isv=N2r/t from both f these equations form one and solve for N the centripetal force equation is F=mv2/r the velocit peed for uniform circular motion isv=N2r/t from both f these equations form one and solve for N Solution v= N2r/t can be changed to tv/2r=N Similarly, F=mv^2/r can be changed to (Fr/m)^(1/2)=v by substitution, (t(Fr/m)^1/2)/2r=N Note you couldve also solved for r in the equation of F to get youranswer..