Recent content by glambeth

Homework Statement A pulley system has an efficiency of 71.5 percent. How much of the rope must be pulled in if a force of 641 N is needed to lift a 160 kg desk 2.51 meters? Homework Equations IMA = De/Dr MA = Fr/Fe Efficiency (%) = Wo/Wi Efficiency (%) = MA/IMA I have absolutely...

I see, well right now we're strictly doing one dimensional forces.

I'm confused whether or not you need to add gravity. I'm a high school student, taking an introductory physics course, so I am still learning the basics, but so far my professor stresses that gravity is an acceleration. So I figured you need to add it to the given acceleration. Am I completely...

hm, so then the force would equal 1(9.8 + 2) ?

Homework Statement Well, i am wondering the impact gravity has on any word problems involving a given acceleration. For instance, if a baseball weighs 1 kg and it accelerates at 2 m/s^2 what is its force? Homework Equations f = ma The Attempt at a Solution Would the force = 1 *...