Fro some reason cant figure this one out: A box is sitting at a frictionless ramp, with a force of 150 N acting on the box, perpendicular to the ground. The ramp is at 25 degrees towards the normal. a)Determine the force parallel to the surface of the ramp, that would keep the box from moving, i.e. force of friction. b) Determine the tension of the rope fastened at the middle of the top of the box, that pulls at a 45 degree angle to the top surface of that box and keeps it from sliding. It seems that I have a problem figuring out what the hell is this question answering. The wording is confusing (at least to me) As far as I understand, both a) and b) are asking for the same thing - force required to keep the box from moving. then is it 150/sin25 for a)? becuase the number seems to be too high?