A flight attendant pulls her 69.1 N flight bag a distance of 280 m along a level airport floor at a constant velocity. The force she exerts is

32.7 N at an angle of 50.2◦ above the horizontal.


Find the work done by the force of friction on the flight bag. Answer in units of J.

Find the coe�cient of kinetic friction between the flight bag and the floor.

1 answer

The horizontal component of her force is equal to the force of friction (constant velocity).

workfriction=frictionforce*distance.

Now for the mu, you have to determine the vertical force, which is mg + vertical component of her pulling force.