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Homework Statement
A man drags a table 4.05 m across the floor, exerting a constant force of 51.0 N, directed 25.0° above the horizontal.
How much work is done by friction? Assume the table's velocity is constant.
Homework Equations
work= umgxsin[tex]\vartheta[/tex]
f=uF
The Attempt at a Solution
I don't understand how I am supposed to find the coefficient of friction without knowing what the mass is.