15.5 Energy is Simple Harmonic Motion

Question 1

In simple harmonic what energy stores are involved in the interchange?

Answer 1

gravitational potential energy (if simple pendulum system )
kinetic energy
elastic strain energy (if a spring mass system)

Question 2

Elastic strain energy and gravitational potential energy are both types of what?

Answer 2

Potential energy stores, these depend on what is providing the restoring force (mass or spring)

Question 3

At the midpoint of oscillation what is the magnitude of potential energy and kinetic energy. Also velocity

Answer 3

velocity is at maximum
kinetic energy is at maximum
potential is at 0

Question 4

At the amplitude of oscillation what is the magnitude of Ek, potential energy and velocity?

Answer 4

kinetic energy is at 0
potential is at max
velocity is at 0

Question 5

How is potential energy changed into kinetic energy?

Answer 5

As restoring force does work on the object

Question 6

At amplitude what happens to object (bob or masses)

Answer 6

Stops momentarily

Question 7

How often does the cyclic interchange happens?

Answer 7

Twice an oscillation

Question 8

What is the sum of potential energy and kinetic energy called?

Answer 8

mechanical energy

Question 9

Does mechanical energy stay constant throughout the oscillations?

Answer 9

Yes

Question 10

What is the maximum velocity in terms of the graph?

Answer 10

sin(1) which is one

Question 11

What does that mean the equation for maximum kinetic energy looks like?

Answer 11

EK = 1/2 M ω^2 A^2