By now you realise that there are many different forces all around us, but how do they all interact. Why aren't we floating up into the air or being crushed into the ground?
Balancing act
Force can be balanced. This is the reason why most objects around us aren't moving.
Observe the image to the right. At this stage both the woman and tiger are pulling with the same amount of force. This means that neither one of them will move.
Until either the woman or tiger adds more force neither will move.
In the case to the left.
You can see that for a brief moment, both cars are applying the same amount of force in opposite direction.
However soon enough, the ford power stroke applies a greater force and pulls the other Ute, making the forces unbalanced.
Another example is weight lifting. The clean and jerk is a popular weighting move. However there is a large amount of physics and forces acting here. We’ll look at the basics for now.
At the start of this lift, there is a greater force. The bar weighs 96kg. This means there is 960 newtons of force pushing down on the bar.
At the stage, the forces are unbalanced. The person is applying more than 960 newtons and lifting the bar.
At the top of her lift, the forces are balanced.
Once she lets go of the bar, the forces become unbalanced and the bar falls to the floor.
