Math Chapter Wise Statics And Dynamics English MCQ UP PCS (Pre) 1995 Q.If a particle moves in a plance curve r = f (θ) then the radial acceleration is equal to– A2 d r d r dt B2 d r d r dt C2 d r d r dt D2 2 d r d r dt dt Show answer Correct answer: 2 d r d r dt