Finding work done by worker pulls

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The discussion focuses on calculating work done by worker pulls using the equation fd cos theta. Participants emphasize the importance of showing initial attempts at solving the problem, including listing forces and resolving them into vertical and horizontal components. Key equations are highlighted, particularly those relating to constant velocity and the balance of forces in both x and y directions. There is a caution against using the same trigonometric function for forces in orthogonal directions and a note on the directionality of forces in the x-component. Overall, the conversation stresses the need for a systematic approach to solving the problem.
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Homework Statement


45186762_10156129905398520_2106908980285538304_n.jpg


Homework Equations


fd cos theta

The Attempt at a Solution


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

 

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shahrilmajid said:

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.
 
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
 
shahrilmajid said:
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
 

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