If the kinetic and potential energy in a system are equal, then the potential energy increases. what happens as a result?

total energy increases.
stored energy decreases.
energy of motion decreases.
total energy decreases.

For the principle of conservation of energy, we have to:

Where,

Ei: initial energy

Ef: final energy

The initial energy is given by:

Where,

Ui: initial potential energy

Ki: initial kinetic energy

For the initial state we know that:

Then, for the final state we have:

For conservation of energy we have:

As the potential energy increased, then for the energy to be conserved, necessarily the final kinetic energy must decrease.

Thus,

Kf " class="latex-formula" id="TexFormula6" src="https://tex.z-dn.net/?f=%20Uf%3E%20Kf%20%20" title=" Uf> Kf ">

Energy of motion decreases.

d

explanation:

v=uf/(u-f)

= 5.10/(5-10) convex lens has positive focal length

=50/-5

=-10 cm (formed at other side)