00:01
So we have a car being pushed up a ramp.
00:02
So let's try to draw that.
00:04
And the ramp has a 15 degree grade, and i made that too big, but that's okay.
00:09
And so let's just say that that's the car.
00:13
And we want to figure out if it requires you, you push along here, and it requires 1 ,200 pounds of pressure to push it up that ramp.
00:22
We want to figure out what the weight of this vehicle is.
00:25
So here is, let me do it in red.
00:28
Here is the vector we want to find.
00:30
The weight of the vehicle.
00:32
And so we know that if i we know that we are adding to that weight that weight you're pushing on an angle and this is the the pressure over which you're pushing that's the 1 ,200 pounds and this angle here would be 15 degrees and this would be a right angle so this would be 75 degrees here and this is the actual amount of pressure that is being pushed on on the ramp.
01:03
And we don't want to find that vector.
01:05
We could find that vector...