Recent content by jrab

it starts with a n and ends with an l and is also known as t*****n

assuming that fg is pushing the box down then break fg into sin and cosine components like before and solve using ma=Fg-Ff draw a FBD it will help remember normal force is perpendicular and gravity is always 90 degrees relative to the ground

if you want to elaborate more about the 2nd part talk about the natures of the materials like roughness and compare them to objects like a zipper the first part you could do a net force statement and FBD to demonstate

well for the first part assuming that this is all on a horizontal plane then would fn equal fg ? so if friction relies on fn and fn increases then... i don't see anything wrong with your second answer

pretty much think using the vertical components to solve

try using trig and angles to model each one write out a force statement and it should help you visualize it better

let me get some paper i gtg eat so ill tell you when i find out

if you told me the numbers i could solve it for you :p

Homework Statement if i am missing something that prevents you from answering and let me know ill try and add it A block pulls another block across a wooden surface via a pulley at a constant speed. the surface is horizontal the mass of the block on the horizontal surface is unknown...