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Does the result match yours?

1106 views

Hey, I'm trying to answer the following question in physics: " A force of 50N acting at 37º above the horizontal pulls a block along the floor with constant velocity. If the coefficient of friction between the block and the floor is 0.2 , what is the mass of the block?" and i'm getting 20.37 as an answer. Here is my procedure, I know the because it is at a constant velocity, a = 0, therefore Sum(Fx) = 0 , so I can say that u.FN - Fx = 0; If that is true, Fx = u*Fn => Fx = u*m*g = > F*cos(37)/(u*g) = m, so , am I missing something or do you guys think I'm right too? Thanks in advance.

Closed as per community consensus as the post is high school-level

asked Mar 31, 2015 in Closed Questions by fbormann (-10 points) [ no revision ]
recategorized Apr 1, 2015 by Dilaton

This is a high school level question. Try Physics Stack Exchange. Here it will be closed.

commented Mar 31, 2015 by conformal_gk (3,625 points) [ no revision ]

Sorry for it, thanks

commented Mar 31, 2015 by anonymous [ no revision ]

vote to close. @Dilaton @dimension10 I think we need an easier vote to close system soon...

commented Apr 1, 2015 by Jia Yiyang (2,640 points) [ no revision ]

@JiaYiyang Oh, I voted to close simultaneously : ) Deleted mine. I suspect a full-fledged community moderation system is very difficult to implement.

commented Apr 1, 2015 by dimension10 (1,985 points) [ no revision ]

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