- #1
pf21avs
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Homework Statement
A 1.13 kg toaster is not plugged in. The coefficient of static friction between the toaster and a horizontal countertop is 0.395. To make the toaster start moving, you carelessly pull on its electric cord. For the cord tension to be as small as possible, you should pull at what angle above the horizontal?
Homework Equations
FBD maybe a sum of all forces problem
The Attempt at a Solution
in my fbd i have come to the point where in the x direction i have Ff=Ftcos(theta) and in the y direction i have fn=fg-ftsin(theta), well i know i can substitute the fn equation for Ff=(mu)fn however once I'm done simplifying i get ftcos(theta)=(mu)Fg-(mu)Ftsin(theta). two unknowns and one equation, i went to the physics tutors office and he told me that fn disappears but when i asked why he just said its in the question and left me to myself, i feel as though i have expended all resources and was wondering if someone could help with this question pleasE?
note: i apologize for the lack of grammerical correctness