00:01
Hello, we are asked in problem number five to find the net torque on this rotating metal square plate.
00:13
The plate itself is rotating about 0 .0 right here in the center.
00:19
There are three forces acting on this plate.
00:23
This force here is 26 newtons.
00:31
This force is 18 newton.
00:35
And this force here at an angle of 45 degrees is 14 newtons.
00:44
So again, to find net torque, we would be looking to sum all the forces times their perpendicular lever arms.
01:00
There are three forces, they provide three different torques.
01:04
Now looking at each force, we want to kind of take a look at which one of these would provide positive torque versus which one would be negative torque.
01:12
Positive torque is causing this object to rotate in a counterclockwise direction.
01:19
That would be this 26 newton force would cause a counterclockwise rotation, whereas this so will in this 14 newton torque as well will also be positive.
01:35
And this 18 would cause a clockwise rotation, therefore it's a negative torque...