Homework Help: physics

Posted by Alex on Sunday, November 28, 2010 at 10:29pm.

a flight attendant pulls her 75 N flight bag a distance of 325 m along a level airport floor at a constant velocity. the force she exerts is 39 N at an angle of 57 degrees above the horizontal. calculate the coefficient of kinetic friction between the flight bag and the floor.

physics - drwls, Sunday, November 28, 2010 at 11:20pm
The value of the friction force equals the horizontal component of the pulling force,
Ff = 39 cos57 = 21.2 N

Divide that force by the weight (M*g)to get the kinetic friction coefficient.

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