WhaT IS CENTRIFUGAL AND CENTRIPITAL FORCE??

Question

WhaT IS CENTRIFUGAL AND CENTRIPITAL FORCE??

Answer 1

action-reaction force pair associated with circular motion. According to Newton's first law of motion, a moving body travels along a straight path with constant speed (i.e., has constant velocity) unless it is acted on by an outside force. For circular motion to occur there must be a constant force acting on a body, pushing it toward the center of the circular path. This force is the centripetal (“center-seeking”) force. For a planet orbiting the sun, the force is gravitational; for an object twirled on a string, the force is mechanical; for an electron orbiting an atom, it is electrical. The magnitude F of the centripetal force is equal to the mass m of the body times its velocity squared v 2 divided by the radius r of its path: F=mv2/r. According to Newton's third law of motion, for every action there is an equal and opposite reaction. The centripetal force, the action, is balanced by a reaction force, the centrifugal (“center-fleeing”) force. The two forces are equal in magnitude and opposite in direction. The centrifugal force does not act on the body in motion; the only force acting on the body in motion is the centripetal force. The centrifugal force acts on the source of the centripetal force to displace it radially from the center of the path. Thus, in twirling a mass on a string, the centripetal force transmitted by the string pulls in on the mass to keep it in its circular path, while the centrifugal force transmitted by the string pulls outward on its point of attachment at the center of the path. The centrifugal force is often mistakenly thought to cause a body to fly out of its circular path when it is released; rather, it is the removal of the centripetal force that allows the body to travel in a straight line as required by Newton's first law. If there were in fact a force acting to force the body out of its circular path, its path when released would not be the straight tangential course that is always observed.

easily we can say that centrifugal force is a fictitious force, peculiar to a particle moving on a circular path, that has the same magnitude and dimensions as the force that keeps the particle on its circular path (the centripetal force) but points in the opposite direction.

while the common example of centripetal force is Sun that is an inward (centripetal) force acting on the Earth. This force produces the centripetal acceleration of the orbital motion.

Answer 2

To see how this force behaves, consider a two litre soda being carried home in the car. On the way home, you round a sharp left hand curve and the soda bottle slides to the right and crashes into the door. To you, it seems that the bottle has been moved by some invisible force towards the door. Hence we have the fictitious centrifugal force. To an outside observer, the bottle has just obeyed Newton's Law; an object in motion will continue to move in a straight line unless acted upon by an outside force. This is merely an application of inertia. Thus, since you neglected to restrain the soda, it continued to move in a straight line while you turned. It was the force of the door pressing against it that caused it to move, in the end.

Even though centrifugal force isn't a "real" force, it is a real effect and can be applied to our advantage.

regentsprep.org/Regents/physics/phys06...

Centripetal Force = The push or pull on a moving object toward the center of its curved path. Centripetal force is always a net force.

Centripetal force keeps the planets in orbit. According to Newton’s 1st law, all masses have inertia and would like to move at constant speed in a straight line. Earth wants to move straight but it is prevented from doing so due to the sun’s gravity. The sun applies a centripetal force.

When you spin a bucket of water over your head without spilling a drop, you are also applying a centripetal force.

hyperphysics.phy-astr.gsu.edu/hbase/co...

Answer 3

The centripetal force is the external force required to make a body follow a curved path.

The centrifugal force is a virtual force equal and opposite to the centripetal force, drawing a rotating body away from the center of rotation, caused by the inertia of the body.