Finding Work from Angle, Mass, and Displacement

[Joel M]

Homework Statement

A flight attendant pulls her 73.8 N flight bag
a distance of 306 m along a level airport floor
at a constant velocity. The force she exerts is
42.4 N at an angle of 60.1◦ above the horizon-
tal.
a) Find the work she does on the flight bag.
Answer in units of J.

Homework Equations

W=Fx * ∆X

The Attempt at a Solution

42.2Cos60.1=Fx=21.036
21.036*42.2=Work?

I found the displacement in the X direction and multiplied by total displacement to get work. This doesn't seem right to me. Any help?

 

[tiny-tim]

Welcome to PF!

Hi Joel M! Welcome to PF!

(have a delta: ∆ and try using the X₂ tag just above the Reply box )

42.2Cos60.1=Fx=21.036
21.036*42.2=Work?
…
I found the displacement in the X direction and multiplied by total displacement to get work. This doesn't seem right to me.

hmmm …

and what happened to the 306? ​

 

[Joel M]

Hi Joel M! Welcome to PF!

hmmm …

and what happened to the 306? ​

Oh, thanks got it now. (42.2)Cos(60.1)(306) = 6437J