Recent content by stumper

Using calculator work, I deduced that the applied force (F) for the pulling scenario is ~101N, now how to get the correct equation to get to that is rather confusing to me, as I would like to show some work for this, but this is how I got it (somehow): If F_n=mg-Fsin30, then F_n=490.5N-(0.5)F...

I'm guesstimating that the amount of the applied force F will most likely be somewhere in the range of 125-175 Newtons. I'll have to keep hacking at it and see what I end up with in the end. :wink:

Let's give it another whack: The vertical component of the applied force would be the equivalent of mgsin30, which in this problem would be 245.25N. Now how this affects the normal force (whether this figure is in the + or - direction) depends on whether the object is being pulled or pushed...

Obviously not, though it may lead me to believe the old adage that pushing an object is less strenuous than pulling the object with a rope, which may potentially imply that there is possibly less work to be conducted if one were to push the object versus pulling it. That being said...

Homework Statement A student could either pull or push, at an angle of 30 degrees from the horizontal, a 50 kilo crate on a horizontal surface, where the coeficient of kinetic friction between the crate and the surface is 0.2. The crate is to be moved a horizontal distance of 15m. (a)...

Taking the advice of PhantomJay and Astronuc, let me redo part of the problem from scratch: [SIZE="3"] Constant Velocity: The force pulling m1 downward is mgsinӨ, so mgsinӨ=(2kg)(9.81m/s/s)(sin37)=11.81N The frictional force opposing this force is u_k(N) [where N is the Normal force, or...

Sorry for the typo. u_k is 0.2. There is no specified u_s in the given problem. That being said, if f_k=u_k(f_N), where is the best point to incorporate this equation into the given work? It appears 1.2kg would be the mass if the system is frictionless in nature...but friction changes...

Homework Statement A 2kg block (m1) resting on a plane inclined 37 degrees is connected by a rope through a pulley to a block (m2) hanging free. The coefficient of static friction on m1 is 0.2. What is the mass of m2 if both masses are at rest? How about if both masses are moving at...