Ask Experts Questions for FREE Help !
Ask
    hello94857's Avatar
    hello94857 Posts: 25, Reputation: 1
    New Member
    		  
    #1

    Feb 8, 2014, 06:03 AM
    Cetrifugal force
    I understand centrifugal force is a force that moves an object away from the axis and thus the faster it goes (rotates) the more force is generated and the close to the axis it gets the faster it will rotate with no added outside source providing acceleration. I understand centripetal force is a force that is provided by a third source of energy providing the containment and thus pushing back against centrifugal force. My questions are, for example an object in orbit around the sun, obviously there are centrifugal and centripetal force at play on it are the centrifugal and centripetal forces provided by a third closest(largest) source of gravity? And if there where a hypothetical existence where the only sources of gravity where flat and equally given and something rotated on the surface of it would there still be a centrifugal and centripetal force reaction or is the reaction also accounted to a third source of gravity that has curvature ?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
    		  
    #2

    Feb 8, 2014, 08:23 AM
    There really is no such thing as "centrifugal force" - it's a fictitous force that is a consequence of the inertia of a body in a rotating reference frame. It's centripetal force that causes the object to move on a curved path. This force, applied by some central mechanism, causes the object to accelerate towards the center of rotation. Remember that , so the force being applied in the direction of the center of rotation causes the object to accelerate inward. In the case of an object in orbit, that force is the force of gravity between the satellite and the body the satellite is in orbit about. For the Earth orbiting the sun the central force is the pull of the sun's gravity on the Earth. If there were no central source of gravity (i.e. no sun) then the Earth would move off in a straight line. An object can not move in a curved path unless some force is acting on it, so I don't understand what your last question is getting at - please clarify.
    hello94857's Avatar
    hello94857 Posts: 25, Reputation: 1
    New Member
    		  
    #3

    Feb 9, 2014, 04:05 PM
    yes helpful thanks
    hello94857's Avatar
    hello94857 Posts: 25, Reputation: 1
    New Member
    		  
    #4

    Feb 9, 2014, 04:10 PM
    Hmmmm, I think I may have it from what you say, the faster you go in rotation the more you would weigh (g force) until eventually you become to heavy to maintain the rotation and break the grip with the force holding you in rotation and thus go off your curvature into a straight line.
    hello94857's Avatar
    hello94857 Posts: 25, Reputation: 1
    New Member
    		  
    #5

    Feb 9, 2014, 05:41 PM
    To clarify, centrifugal force is not a force but an effect when something is forced to change its forward momentum. Moving objects can only ever move forward, when something rotates it is still trying to move in a straight line but a force is forcing it to take a curved path. Momentum is weight in motion.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
    		  
    #6

    Feb 10, 2014, 05:25 AM
    You were doing OK up to this point:

    Quote Originally Posted by hello94857 View Post
    Momentum is weight in motion.
    Momentum is mass in motion.

    Weight is the force of gravity acting upon a mass.
    hello94857's Avatar
    hello94857 Posts: 25, Reputation: 1
    New Member
    		  
    #7

    Feb 10, 2014, 05:58 PM
    Yes, I need to think more specifically, thank you.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

How many pounds of force per square inch from a coyote delivering 300n of force? [ 1 Answers ]

All right, so I've ran into coyotes a couple of times on vacation now. First time scared me a little, after that I researched them. Based on average weight and top speed of a coyote, a pounce at me can deliver 300N(n?? ) of force. With a surface area of, oh, I'd estimate around 26x12in. So...

How can a force transferred person force a more senior employee to go to a different [ 1 Answers ]

2 employees with less seniority have been put in my department and now I have been forced to a different shift

Can the force of an elastic band be equated to a certain poundage of force? [ 2 Answers ]

This seems like a simple yes, but here is my confusion. A band snaps back faster than an object would free fall. So even if a stretched band was 20 pounds of force, it is pulling at a higher velocity than a twenty pound weight. For example if you do an arm curl with a 20 pounds weight, it...

Find force of gravity, normal force, and net force in Physics [ 6 Answers ]

A crate of mass m (=10 kg) is placed at rest on a (frictionless) inclined plane, which has an angle (= 30 deg ) above horizontal 1. The force of gravity on the crate is? 2. The normal force on the crate is? 3. The net force on the crate is? 4. How long would it take the crate to slide 8 m...

At what value of Force, can we feel the effect of gravitational force between objects [ 2 Answers ]

PLEASE READ THE WHOLE QUESTION AND THEN ANSWER At what value of Force, could we feel or see the effect of gravitational pull or force between two objects. E.g. 2 pencils kept at a very small distance (r) exert a force (F) on each other such that they are pulled by each other and stick to each...

View more questions Search