Question #be539
1 Answer
Sep 4, 2017
Explanation:
We're asked to find the work done by the applied force of the shopper on a cart as she pushes it down an aisle.
Since this motion is onedimensional, we can use the equation
#ul(W = Fscosphi#
where

#F# is the magnitude of the applied force acting on the cart (given as#35# #"N"# ) 
#s# is the magnitude of the displacement of the cart (given as#50# #"m"# ) 
#phi# is the angle the applied force makes with respect to the positive#x# direction (given as#25^"o"# )
Plugging in known values, we have
#color(red)(W) = (35color(white)(l)"N")(50color(white)(l)"m")cos(25^"o") = color(red)(ulbar(stackrel(" ")(" "1586color(white)(l)"J"" "))#