Which statement is INCORRECT about energy in a simple harmonic oscillator, such as a mass oscillating on a spring .

Answer 1. The potential energy of the system is equal to the total energy minus the kinetic energy, U = E-1/2mv^2.

2. At position x=0 the total energy is equal to the kinetic energy, E = K = 1/2 mv^2.

3. The potential energy of the system is half the total energy at x = A/2.

4. At position x=A the total energy is equal to the potential energy, E = U = 1/2 kx^2.

5. The total energy, E, at position x=A and x= A/2 is the same.

Question

Which statement is INCORRECT about energy in a simple harmonic oscillator, such as a mass oscillating on a spring .

Answer   1. The potential energy of the system is equal to the total energy minus the kinetic energy, U = E-1/2mv^2.
 
  2. At position x=0 the total energy is equal to the kinetic energy, E = K = 1/2 mv^2.
 
  3. The potential energy of the system is half the total energy at x = A/2.
 
  4. At position x=A the total energy is equal to the potential energy, E = U = 1/2 kx^2.
 
  5. The total energy, E, at position x=A and x= A/2 is the same.