2006-09-19 20:18:30 · 13 answers · asked by bulldawg771 1 in Science & Mathematics ➔ Physics
yes, or all the forces acting on it counteract eachother so the the sum of them all is zero
2006-09-19 20:19:45 · answer #1 · answered by holden 4 · 2⤊ 0⤋
I have read all the answers and have to say the following:
If acceleration is zero then the net unbalanced force on the object is zero. This is possible in two ways:
1.No external force acts on the body as the questioner has asked or
2. more than one external forces act but they all balance each other so that the vector sum of them all is zero.
Now the first condition is never met unless the object is in deep space. So mostly the second condition holds good.
We all must remember that the first two laws of motion talk about the net unbalanced force, without going into the question of the nature of each individual external force. It is the third law which hints towards the cuase of force which is some interaction with something external to the object.
2006-09-20 04:58:11 · answer #2 · answered by Let'slearntothink 7 · 1⤊ 0⤋
Is possible that exist forces acting on the body, but the net result is zero.
Like a car moving to a constant velocity... on the car are acting the friction forces, the external forces (air) and torque produces by the motor of car... but the final result is the net force = 0.
2006-09-20 03:55:14 · answer #3 · answered by Juan D 3 · 0⤊ 0⤋
Not neccesary. Because there might be several forces acting on it, but all acting from different direction, and subsequently all balance each other. Just like when we are standing still, the earth's gravitational force is pulling us, but the normal forces from our feet is balancing it. Making the sum of these forces zero.
2006-09-20 03:29:35 · answer #4 · answered by yk1982 2 · 3⤊ 0⤋
There is no NET force acting on it. If it is stationary in a gravitaional field, like a mass on a table, there is a gravitational force = m*g acting on its center of gravity, but there is a force from the table counteracting it.
2006-09-20 03:33:09 · answer #5 · answered by gp4rts 7 · 1⤊ 0⤋
If it isn't accelerating then there are no forces acting on it.
It's like when something reaches terminal velocity and there is no more acceleration when something is falling.
The forces aren't balanced because if they were then the object wouldn't move!!!
2006-09-20 03:30:39 · answer #6 · answered by Emma Lee 2 · 0⤊ 1⤋
F = MA check this simple formula: If "A" is zero, F is also zero.
Force = Mass X Acceleration :::
Mass X 0 = 0
Also:::: Mass = Gravity/32 at sea level
2006-09-20 03:28:06 · answer #7 · answered by Anonymous · 0⤊ 1⤋
Gravity is still an active force on any object.
2006-09-20 03:21:16 · answer #8 · answered by TERK65 1 · 0⤊ 2⤋
yep the net force acting on the body is zero.
2006-09-20 03:20:18 · answer #9 · answered by firat c 4 · 0⤊ 2⤋
no forces at all, or the net force on it is zero. their vectors are cancel each other
2006-09-20 03:21:51 · answer #10 · answered by Emmanuel P 3 · 2⤊ 0⤋