Gravitational potential energy is always calculated with kinetic energy
mechanical energy
total potential energy
mass gravity and height

kinetic energy as it involves dispersal of energy

 The rhetoric from this last line seems to be saying as a metaphor that in the eyes of men, the vicious tricks of the horse or mule in spite of being provided fodder are like women, who dare to challenge the authority of men so this is a metaphor for the attitude of men to women. She wants women to   to have the same rights as men in other words to education, to meaningful work and to participate in politics alongside and as equal partners to men.