00:01
Someone pushes a 60 kilogram refrigerator with a horizontal force of minus 270 newtons.
00:13
So the minus meaning to the left.
00:15
So we'll just call that force capital f.
00:19
The coefficient of static friction is 0 .65.
00:24
Okay, so let's just, we're going to need to know the forces, right? so the weight is pushing down.
00:31
It's pulling down.
00:33
The normal force from the ground is pushing up on the fridge.
00:37
And then there's some friction.
00:40
I use lowercase f for friction.
00:44
Ok.
00:45
If the fridge does not move, what are the magnitude and direction of the static frictional force that the floor exerts on the fridge? so the fridge does not move.
00:57
So the sum of the forces in the x direction is 0...