Finding work done by worker pulls

[shahrilmajid]

Homework Statement

Homework Equations

fd cos theta

The Attempt at a Solution

Finding the work done. Please anybody help me[/B]

 

[haruspex]

Homework Statement

View attachment 233203

Homework Equations

fd cos theta

The Attempt at a Solution

Finding the work done. Please anybody help me[/B]

You need to show some attempt first.
List the forces, creating symbols to represent them (like, N for normal force).
Resolve into vertical and horizontal components.
Write equations relating these.

 

[shahrilmajid]

Constant velocity, a=0
f=ma , mean total f in x and y direction is totally 0
on y componen = N-W+Fsin teta
x component = fk + Fsin teta

please check

 

[stockzahn]

Constant velocity, a=0
f=ma , mean total f in x and y direction is totally 0
on y componen = N-W+Fsin teta
x component = fk + Fsin teta

please check

1) It's very unlikely that the forces in two orthogonal directions are calculated with the same trigonometric function
2) In your x-direction balance both forces are pointing in the same direction