( What is the significance of center of gravity determined in the experiment?
By means of force diagram of experiment, and making use of the value
of L. Show that x = 50 -5/7s
Determine the tension in the string.

You get 6 for mechanical

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

Since the pully is a simple machine so the mechanical advantage is a 1

2.77 x 10^-3 its for plato user