Recent content by BunsenBurner1

wouldnt the PE_grav. end up canceling each other out though?

well isn't Energy and Work equivalent concepts? E = W = Fd?

ok looking it over again i got a different answer mu = .86 Equation: Efficiency=Wout/Win where W=Force*distance efficiency being 42% distance i found by multiply 3*sin20 which led me to find Wo=mg(1.026) to find Wi --> F=Nu (F being force, N being normal force, u being coefficient of...

[SOLVED] correct me if I'm wrong please just a couple of problems i want to make sure i did correctly. 1) A force of 4.0 N is applied to a door at an angle of 60 degrees and a distance of .30 m from the hinge. What is the torque produced? T=F*d*sin theta --> 1.04 Nm 2) A child...

well i got .73 for mu but I'm not sure if that's right...

so I've got the force of friction, normal force, pulling force, and mg Ff, Fn, Fp, mg and KE and PE are in play here...but...KE can be ruled out and PE would be mg(1.026) so Fp=mg(1.026)?

A sled is pulled 3 meters at constant velocity up a 20 degree incline. the efficiency of this procedure is 42%. Calculate the coefficient of friction between the crate and the incline. alright I'm completely clueless on this one. i know that efficiency=output (energy delivered by...

oh i get it now. thanks!

[SOLVED] torque question Homework Statement A bucket filled with water has a mass of 23 kg and is attached to a rope wound around a cylinder with a radius of 0.050 m at the top of a well. What torque does the weight of the water and bucket produce on the cylinder? Homework Equations...