- #1
Physics_Noob
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Homework Statement
Determine the coefficient of friction for a surface when the mass of an object is 300g and the angle of incline when the object starts to move is 29°
Distance traveled and acceleration are not provided
Homework Equations
W = mg
Ffric = μN
N = mg cos(θ)
μN = mg sin(θ)
The Attempt at a Solution
I started by drawing a free-body diagram and identified the lines of frictional force, normal reaction force and gravity.
I then calculated the weight:
W = mg
= 0.300 x 9.81 m s-2
= 2.94 N
Not sure on the frictional force as μ is not known
N = mg cos(θ)
= 2.94 N x cos(29)
= 2.57 N
This is where I get stuck as my experience in maths and science is fairly basic.
Could someone please talk me through things a bit please?
Thank you.