Asked in Science
Can we use the centripetal acceleration as a free energy source?
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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 Home & Garden
What is the source of free energy for the leaf factory?
Asked in Renewable Energy, Solar Power
What is an advantage of solar power as a source of electricity?
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 Energy, Solar Power
Why would somebody choose solar energy and not another energy source?
Asked in Solar Power
Which of the following is an advantage of solar power as a source of electricity?
What is the following is an advantage of solar power as a source of electricity?
Asked in Fossil Fuels
Why is hydroelectric source of energy better than fuels for generating electrical energy?
Asked in Geothermal
Why is geothermal energy a good source of alternative energy?
Asked in Science, Energy, Wind Power
Which best describes a similarity between power plants that use water as an energy source and those that use wind as an energy source?
Asked in Physics
How is the acceleration of an object in free-fall related to the acceleration due to gravity?
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.
Asked in Kinematics
Would acceleration increase as an object free falls?
Asked in Elements and Compounds
How is hydrogen an alterative energy source?
Asked in Stars
What is the free fall acceleration at the surface of the sun?