Wow. that makes sense. That was very helpful. Even though I am not in calc based physics, I still understoon your reasoning. Thanks Quasar987 and AM both.
An arm has a mass of 7.0 kg. Treating the arm as if it were a single point mass m attached to a rigid massless rod, determine the work that must be done by the deltoid muscle to move the arm from position 1 to position 2. (Position one and two have an angle of 30 degrees between them and it is...
A crate of mass 10.0 kg is pulled up a rough incline with an initial speed of 1.50 m/s. The pulling force is 100 N parallel to the incline, which makes an angle of 20 degrees with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 5.00 m. How much mechanical...
But the sledge is not being pulled up a ramp thus it is not on an inline itself. the rope is the only thing on the incline and the sledge is only being moved horizontally. I tried plugging in the numbers and i got 113.05N but I know the answer is supposed to be 79.4 N i just don't know how to...
A sledge loaded with bricks has a total mass of 18.0 kg and is pulled at a contstant speed by a rope. The rope is inclined at 20.00degrees about the horizontal, and the sledge moves a distance of 20.0m on a horizontal surface. the coefficient of kinetic friction between the sledge and surface...