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.

Answer 1

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.