###### Asked in Science

Science

# Can we use the centripetal acceleration as a free energy source?

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## Related Questions

###### Asked in Physics, Newtons Laws of Motion, Rotation

### When earth angular velocity increase then gravitational acceleration increase?

Let's be very accurate when describing accelerations in this
question.
Consider a person at the equator. The gravitational force of
attraction on him is constant whether or not the earth is rotating.
This acceleration is called the acceleration due to gravity
(ag)
Now, since the earth is rotating about its axis, there has to be
a centripetal force on the person. It is the gravitational force
which provides the centripetal force. Thus, there is a centripetal
acceleration on the person (ac)
Finally, the rest of the gravitational force causes the person
to accelerate towards earth. This is called the acceleration of
free fall (af)
This gives ag = ac + af
ac is given by the equation: ac = w2r
where w is the angular velocity and r is the radius of
rotation
If the angular velocity of the earth increases, centripetal
acceleration will increase.
af = ag - w2r
Therefore, the acceleration of free fall will decrease.

###### Asked in Solar Power

### Why is solar energy the best?

###### Asked in Physics

### How can free fall motion and circular motion both be classified as acceleration?

Answer #1:
Free fall is motion due to gravity.
centripetal force causes the acceleration in a circular
motion.
===========================
Answer #2:
"Acceleration" means a change in either the speed or the
direction of motion.
(Or both, of course.)
Maintaining a steady 30 miles per hour as you round a curve is
acceleration.
In the case of free fall, the speed is constantly
increasing.
In the case of circular moltion, the direction is constantly
changing, and the speed could also be.

###### Asked in Physics

### When you are in roller coaster you never fall down even when you are upside down Why?

It is true that the centripetal force is directed towards the
center of the circle but in addition to the centripetal force there
is another force called
centrifugal force which is reaction force. The centrifugal force
is directed opposite to the centripetal force, i.e.,outward. It is
due to this force that we never fall down even when we are upside
down.
Technically, you are under the same downward acceleration at all
times. When you are thrust up by the ride, it takes some time for
the downward acceleration to stop the upward movement. That "some
time" is your free upside-down ride.