- #1
yoshi6
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Homework Statement
A crate on a floor has an applied force (12 degrees below horizontal) of 524N. The crate moves with constant velocity. The coefficient of kinetic friction is 0.15. What is the mass of the crate?
Homework Equations
Fk=uk*Fn, Fn= m * g
The Attempt at a Solution
OKay so this is what I did. Apparently it is not right, my teacher said it is 80% right. Can someone please tell me what I am doing wrong. As soon as possible would be really helpful. Thanks
Fn= 524cos12
= 512.5493428
m= ukFn/ g
= (0.15)(512.5493428N)/(9.81m/s^2)
= 7.8kg