Skills for analyzing processes involving electric force and electric potential energ...

Skills for analyzing processes involving electric force and electric potential energy

Electric shuttle train A shuttle train moves from one station to another. It is powered by equal-magnitude, oppositesign charges on top of each station (see Figure P14.48). If a 7000-N friction force opposes the train’s motion, how great must the dipole charge be to induce an initial acceleration of 1.0 m/s²? The train’s mass is 2.0 X 10⁴ kg, and it has a positive charge of +3.0 X 10^-2 C on its roof.