Question

Compare the sum of the kinetic and potential energies of the pendulum at position A to the sum at position C. (Ignore friction.)

Answer 1

Point C is the point of maximum kinetic energy and minimum potential energy. According to the law of conservation of energy, the sum of the kinetic and potential energies of the pendulum is constant, assuming no losses from friction. So the potential energy at A is equal to the kinetic energy at C.

Step-by-step explanation:

I dont know if this is correct but I think it is.If it isnt im srry :-[

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Answer 2

The sum will always be the same. This is also known as mechanical energy. If you included friction, adding that type of energy to the mechanical energy will make the two equal.