A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Any object moving in a circle has a force acting on it towards the centre of the circle. What does this force do to the object?
anonymous
 one year ago
Any object moving in a circle has a force acting on it towards the centre of the circle. What does this force do to the object?

This Question is Closed

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1that force bends the trajectory of the object, so the trajectory of such object results in a circumference, in other words the circular trajectory is the effect of the action of such force, and such force is called centripetal force.

greatlife44
 one year ago
Best ResponseYou've already chosen the best response.0My physics knowledge which is beginning to allude me but when you move in a circle, say at a certain speed, there is a velocity? why? because by moving in a circle, the direction is always changing so there's a velocity to accompany that. furthermore, we can see that there will always be an acceleration vector that's not only faces towards the center of the circle at all times, but also is perpendicular to your velocity vector. perpendicular means, the two vectors make an angle of 90 degrees. dw:1441741357541:dw centripetal acceleration is defined as this. \[a_{c} = \frac{ v ^{2} }{ r }\] what if we keep all other variables constant and say increase r the radius. well, your acceleration Ac would be. Play around with the formula and say "oh if I keep these variables constant" while adjusting the other then what happens now? @michele_laino I have heard that the centripetal force is not actually a force, what are your thoughts about this?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1let consider a car which travel in a circular track, then in order to bend the trajectory of the car, the driver have to exert a force by means of the steering wheel of his car, well that force is the \( \large centripetal\; force\). Now, that car is not an inertial system, since an acceleration is acting inside it, in fact the driver feels a continuous boost in the same direction and opposite orientation with respect to the centripetal force. Since that boost is not coming from a contact with any other body and the driver, we say that a fictitious force is acting on the driver and on any other person and object inside that car as well, we name that fictitious force \( \large centrifugal\; force\) dw:1441742946838:dw

greatlife44
 one year ago
Best ResponseYou've already chosen the best response.0I must understand this! When, say a person undergoes a sharp turn the force that pulls him inward, is an actual force that's the centripetal force. It is hard form to visualize this boost, can I just say that this concept is a non entity, something that does not exist? if this force is fictitious, then does it have any bearing on calculations? dw:1441744245765:dw

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1not exactly the centrifugal force, is the fictitious force, and it pulls every person and object inside the car outward. When you go by car, and you are going to travel a curve, you feel a force which pulls you at the opposite side with respect to the center of curvature of the trajectory of your car, well that force is the centrifugal force dw:1441745690785:dw @greatlife44

greatlife44
 one year ago
Best ResponseYou've already chosen the best response.0I see, novice physics person here. if the car is moving in a circle, it seems that the centrifugal force is opposite the centripetal acceleration, Why doesn't an object fall towards the center? does this centrifugal force help to counteract this phenomena given that it's in opposite direction from the centripetal acceleration? furthermore how do we calculate the centrifugal force? I had a physics teacher who said that the term 'centrifugal' is not really a term and should be disregarded. dw:1441757493626:dw @Michele_Laino @rvc

rvc
 one year ago
Best ResponseYou've already chosen the best response.1centrifugal force has the magnitude same as that of the centripetal force. the direction of both the forces is opposite. the centripetal force acts towards the centre while the centrifugal force acts away from the centre. the centrifugal force helps to keep the body in motion.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.