force physics science questions with pictures

Or you see it's right based on how I drew the vector. You have a net force of 1 N to the right. This guy's pushing harder with 3 N, but the force of friction is now 2 N to the left. And you do have two forces that are counteracting on the horizontal direction. Keeping the rock from plummeting or accelerating towards the centre of the earth. The force of gravity is being balanced by the normal force of the ground. So once again these are all balanced forces or there's no net force going on right over here. Because they're balanced there is no net force and this rock isn't going to accelerate. Then in the horizontal direction, this guy is pushing of 2 N to the right is being completely balanced by the force of friction of 2 N to the left.

Once again, 5 N up and 5 N down, they are balancing each other. We would not consider this one of the scenarios we see an unbalanced force. So you have zero net force, these right here are balanced. There is zero net force going on, there are no forces the way I've drawn it, going on in the horizontal direction. These forces completely balance each other out. These have the same magnitude in the exact opposite directions so they cancel out. 5 N normal force of the ground supporting the rock. So now I'll let you think about which of these have an unbalanced force in them, or another way to think about it, which of these have a Net Force going on? So let's look at the first scenario, we have a 5 N force of gravity acting towards the centre of the earth. You have this guy pushing 1 N against this guy's motion to the left, so between this guy and the force of friction, you have 3 N going left. So you have 2 N of the force of friction. So he's pushing in the other direction at 1 N. You have 2 N from the force of friction, I won't that draw just yet and you also have another character right over here, who is trying to keep this guy from pushing the rock. So now he's applying 4 N in that direction. The rock is being supported by the ground, 5 N upwards. So I have the force of gravity, 5 N downwards. The last scenario I'll draw with the rock again as that seems to be the theme of the video. As if this thing bumps into all of the air particles as it is falling to the ground.

This is the force of friction or you can call it air resistance. You can view it as the force of friction of the air, and let's say that is 1 N up. We're assuming we're not going to think too much about- Actually let's think about it a little bit, let's also put, so let's put it.so I have the force of gravity. So the only force I have acting on the rock right now is the force of gravity, acting downward. Now let's imagine that this is the ground. So that right over there is the force of friction. And now he's pushing with a force of 3 N to the right and the force of friction is still 2 N to the left. And this guy over here has been able to push a little bit harder. The rock is being supported by the ground 5 N upwards. Force of gravity, like the rest of the scenarios. Let's draw another scenario where I have a rock now. I'll do friction in orange 2 N to the left So that right over there is the force of friction. But then there's a force of friction between the rock and the ground that is going 2. So we have some character here and he's trying to push the rock and he's applying a force of 2 N to the right. And now there's some character who's trying to push the rock. And there's still a normal force, the ground supporting the rock of 5 N upwards. So these forces have the same magnitudes but they're going in opposite directions. The ground is providing a normal force in this situation. The ground is providing a normal force, I'll do it in green.

So the ground is providing an upwards force or normal force in this situation.

But then the rock is being supported by the ground, the ground is keeping it from being plummeted downward. Now the force of gravity is going to be pulling the rock downwards towards the center of the earth and it's going to be pulling it, as essentially the weight of the rock, it's going to be pulling it downwards, let's say with a force of 5 N downwards. And then sitting on the ground we have a rock. So let's start with the scenario where we have the ground. You'll hear the terms, Balanced Forces and Unbalanced Forces a lot when you're dealing with Physics and what I wanna do in this video is give you a bunch of scenarios and have you think about whether the forces in these scenarios are balanced or unbalanced.

Force physics science questions with pictures