00:01
In this problem we have been given 10 different statements and we need to decide how many of them are true and how many of them are false.
00:07
Let us see how we can do so.
00:10
So first statement is talking about balanced forces.
00:13
So it's saying that balance forces can cause an object to start moving, stop moving or change direction.
00:18
But definitely that is not true because in case of balance forces the f net is equal to 0.
00:24
And if f net is equal to 0, that is the total sum of all the forces acting on the obvious.
00:30
Object is zero, then the object cannot move.
00:33
Balance means that there are two forces or more forces acting on the object but they should be equal in the magnitude and opposite in the direction.
00:43
Balance forces means forces should be equal in magnitude and opposite in direction and hence they cancel out each other resulting in no change in the direction or motion of the object.
00:54
So the first statement is false.
00:57
Now in this figure we can clearly see that a block is there namely a which is acted upon by two forces f and f in opposite direction and hence f net for this particular object is zero so balance forces are acting on it and hence it cannot change the motion of the object or it cannot change the direction of the motion and so the first statement is false now let's talk about the second statement so in the second statement we have the definition of force that is force is a push or pull acting upon on object that is definitely true because that's the definition of of force even though it is very simple definition but it's true.
01:34
Now let's talk about the third statement in which it is said that net force is the overall force after all the forces are added together.
01:44
Definitely.
01:44
F net is the force that means that if we sum all the forces acting on an object, let's say there is an object in which forces are acting namely from force first to force n.
01:57
And if we sum all those forces, then that summation is called as overall force or net force.
02:05
So the third statement is true because it's based on the definition of net force.
02:09
Now we will talk about fourth statement.
02:12
So in the fourth statement, they are talking about the unbalanced forces.
02:17
They are saying that when there is a net force acting on an object, the forces are unbalanced.
02:23
Definitely.
02:24
If the value of f -net, that is if the value of total force, acting on an object is not equals to 0, then the then the forces on an object can be called as unbalanced force.
02:36
So the fourth statement is also true because it's based on the definition of unbalanced force.
02:42
Now we will talk about the fifth statement.
02:45
So in the fifth statement we can say that it's talking about when two forces act in the same opposite directions the object will change in motion.
02:54
So we have been given a very ambiguous statement that is same.
02:57
That the object, the forces are acting in the same opposite direction.
03:02
So there should be some reference.
03:04
How we are saying that the opposite direction is same.
03:07
So this is ambiguity, there is ambiguity in the statement but we will try to answer this problem as much as possible and are as correct as possible.
03:15
So we can say that the problem is saying that there are two forces acting on an object and both the forces are acting on the same object in opposite direction and hence the net overall force will be 0 and hence we will not see any change in the motion of the object.
03:33
So the given statement is false because f -net will be 0.
03:38
Forces are acting in the same opposite direction...
