Does this mean there are no forces acting on it? Give example supporting your answer.
2007-04-09 11:29:36 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Physics
No, it means that the resultant force or net force is zero.
Consider two teams in a tug of war.
Each team pulls with a force of 500 Newtons but in opposite directions. There is no net movement as the net force is 500-500 = 0 (we subtract because the forces are in opposite directions).
2007-04-09 11:33:06 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Actually, there are two correct answers. One has already been given - all physical forces are balanced against each other so that there is no net force.
The other answer is that there are no forces applied to the object and the object will retain whatever velocity it had before reached a null-acceleration state. This condition is only likely in a single-object universe as there will always be gravitational effects once any other object is present.
2007-04-09 18:35:50 · answer #2 · answered by eriurana 3 · 0⤊ 0⤋
No, not at all. If there are two exactly opposite forces of the same strength both acting on the object at the same time, its acceleration would be zero.
2007-04-09 18:32:44 · answer #3 · answered by MLBfreek35 5 · 0⤊ 0⤋
Definitely not. Two equal and opposite forces may be placed on an object. It will not move, but there is still force acting upon it.
The bottom of your feet has the force of your weight acting on the ground, while the ground is pushing up with equal force (otherwise you would move 'through' the ground).
A bridge can have 1000s of tons of force pushing down in the middle. That load is transferred to the supports on the shores of the crossing, where equal force is applied 'up' to counteract the force 'down' (the bridge does not move).
,
2007-04-09 18:35:54 · answer #4 · answered by tlbs101 7 · 0⤊ 0⤋
no it doesnt.
there are forces acting on everything even if they dont move.
gravity in particular- gravity acts on everything. somthing can be stood still without moving, and gravity would still be acting upon it
and surely if something is decelerating, than the acceleration is zero? tell me if im wrong...
pressure is another force that acts apon everything, both atmospheric and those by liquids. somthing can be immersed in water (or just on the ground) not moving, and there would still be pressure
and if the object is made up of many bits, than friction is holding the entire thing together, and stopping it from moving in the first place.
;)
2007-04-09 18:35:51 · answer #5 · answered by ribena_wrath 3 · 0⤊ 0⤋
It means there is no net force on the object. All the forces balance. Take a boat floating on a pond. The buoyancy force upwards is balanced by the gravitational force downward.
2007-04-09 18:36:17 · answer #6 · answered by Scott H 3 · 0⤊ 0⤋
no, if there is no acceleration, that means the forces are balance.
ex: an object stand still on the ground. It is not accelerating becasue the weight of the object is equal to the normal force.
2007-04-09 18:32:09 · answer #7 · answered by 7 · 2⤊ 1⤋
the only force it would have on it if its accelerating is the constant velocity. the object does not go faster. or slower (as in negitive acceleration).
there is the force pushing the object, but the force is not increasing.
2007-04-09 18:33:56 · answer #8 · answered by gonavy271 2 · 0⤊ 0⤋
F=ma
if a = 0, then F = 0
2007-04-09 18:32:13 · answer #9 · answered by Anonymous · 0⤊ 0⤋
How about you have 500000000 forces that all cancel out?
For the second poster:
NET force = ma
and NET force does not = force
2007-04-09 18:32:30 · answer #10 · answered by J Z 4 · 0⤊ 0⤋