What is bouyant force?
914583
That's more physics than chemistry! But anyway...\n\nA buoyant force, is that force which tries to push a body out of a medium.  Like put a ball in water, and there's a force which pushes it back up.\n\nThis mass of medium displaced is obtained by multiplying the volume of the medium displaced due to the ball by the density of the medium.  By multiplying the mass with acceleration due to gravity (9.8 ms-2 on Earth), you get the buoyant force.
26785
bouyancy verses displacement.. and all it really boils down to is which is heavier.
1011658
Ummmm, I think your talking about Centripetal and Centrifugal force....
117640
Buoyancy is a force.  Density is the ratio of an objects mass to volume (D=m/v).\n\nThe buoyancy force exerted on an object is dependent on the amount of (for lack of a better work) "stuff" it displaces.\nFor example, a ship floating in the water floats because the weight of the water it displaces is greater than its own weight.  Likewise, a balloon filled with Helium will float because the weight of the air it displaces it more than its own weight.
545558
Force = mass * acceleration\nForce = 1300 kg * 2.6 m/s2\nForce = 3380 Newtons
771568
Basically you have the right idea. Use momentum (mass x velocity) for the motion and the sudden change in speed and/or direction (acceleration) and you get force x time = kinetic energy trying to rip you apart or squash you like a bug.
1164784
Add up one opposite vector (going up). In physics, they call it NORMAL FORCE.
680834
A force is a push or pull upon an object resulting from the object's interaction with another object.\n\nThe formula is F=ma, where F= force, m=mass, a=acceleration
154782
I'm pretty sure that it is an upward force because the buoyant force would be the force of the liquid, right? The boat(example of an object) would be pushed downward because of gravity, and the water would push back upward. It would be kind of like the ground pushing back upward on your feet.
83668
There are several definitions of the word "force," but since your question is in the Other Science section, this should be the one you're looking for ---\n\nForce is a vector quantity; its size is measured in Newtons. One Newton will make a body of mass 1kg accelerate from rest to 1 metre per second, in a time of one second.
952124
1. The bouyant force of the water on the object is the difference in the reading, i.e. BF=(.0554-.0370)g\n                                   =0.0184gN\n\nBased on Archimedes' Principle, BF =Volume*Density of water displaced.\n \n0.018g=Volume*1000g\nVolume=.018/1000\n            =1.8*10^-5m3\n\n2. Density of Object=Mass/Volume\n                                =.0554/1.8*10^-5\n                                =3078kg/m3
1156730
force=mass*acceleration\nforce/area=pressure (usually measured in p.s.i. [pounds per square inch])
433066
Mr Newton.  For every action there is an equal and opposite reaction.\n\nThe action is pushing air down.  The reaction pushes the hovercraft up.\n\nAnd some Bernoulli, whereby increased pressure on one side of an object creates lift.  The air pushed down, and retained by the skirt, causes a pressure differential between the air under the hovercraft and the air above it.  This creates lift
958110
Putting it simply:\nEffort force, is force that must be applied to do something,eg, to push a block.\nResistance force, is the force which restricts the movement,eg, the friction of the block with the ground.
65048
Force, in physics, any action or influence that accelerates, or changes the velocity of, an object. Force is a vector, which means that it has both direction and magnitude. When several forces act on an object, the forces can be combined to give a resultant, or net force. The resultant force acting on an object, the object's mass, and the acceleration of the object are all related to each other by Newton's second law of motion, named after the 17th-century physicist and mathematician Isaac Newton. The second law of motion states that the acceleration an object experiences multiplied by the mass of the object is equal to the resultant force acting on an object. Thus, if a given force acts on two objects of different mass, the object with a larger mass will have a lower acceleration. See Mechanics.\n\nAn object experiences a force when it is pushed or pulled by another object. For example, shoving a stationary shopping trolley applies a force that causes the shopping trolley to accelerate. An object can also experience a force because of the influence of a field. For example, a dropped ball accelerates towards the ground because of the presence of the gravitational field; electrical charges attract or repel each other because of the presence of an electric field.\n\nUsually, several forces act on an object at once. If multiple forces combine to give a resultant force that is zero, then the object will not accelerate; the object will either remain motionless or continue moving at a constant velocity. For example, if a person pushes a shopping trolley with a force equal in magnitude to the force of friction that opposes the trolley's motion, the forces will cancel, giving a resultant force of zero. As a result, the trolley will move down the aisle with a constant velocity. If the person suddenly stops pushing, the only force acting on the trolley is the frictional force. Since the resultant force is no longer zero, the trolley accelerates: its velocity drops to zero. (An acceleration such as this, in which speed is reduced, is also known as deceleration.)\n\nIn SI units, the unit of force is the newton, which is the force that imparts to an object with a mass of 1 kg an acceleration of 1 m/sec2.
823708
Weight of the body is always less than the weight of the liquid it displaces which is the buoyant force , if it has to float \n\nIt is the law of bouyancy ,\n\nIt states that:\n " any body completely or partially submerged in a fluid (gas or liquid) at rest is acted upon by an upward, or buoyant, force the magnitude of which is equal to the weight of the fluid displaced by the body."\n\nThe buoyant force is equal to the weight of the displaced fluid
144016
The net force needed is zero.  Force is mass * acceleration, and acceleration suggests a change in velocity.  For constant speed and direction, the acceleration is zero, and hence the net force is zero.  When moving at constant velocity, the frictional and drag forces (which work to slow the car) and the drive force of the engine are exactly equal and opposite.  The net force is the sum of these two opposite forces, and hence the net force is Zero.