Recent content by RanaiD

Hi, I'm having trouble understanding this attached example in my physics textbook. It notes torque as being positive when substituted back into mg-Ft=-ma rather than being negative which I would think it would be because it is going in the clockwise direction. Can anyone help me understand why...

So does that mean you only look at the work of the forces acting parallel to the x displacement of the box moving up the incline? I understand why you would add the work done by gravity along the horizontal displacement, but why wouldn't you also add the vertical displacement done by gravity...

I'm struggling with the concept of net work. If I had a box and was pushing it up an incline would the net work be all the forces parallel to displacement in x direction * displacement in the x direction added up, plus the displacement in the y direction * force gravity parallel to displacement...