Work Energy Problem: Calculate Fg and m in Constant Velocity Scenario

[TheRedDevil18]

Homework Statement

Homework Equations

W=F*delta x
Fg = mg

The Attempt at a Solution

I just want to know if my answer is correct for question 4.1.2:

W=Fapp*delta x
377860 = Fapp*70
Fapp = 5398N

Fnet = 0 (constant velocity)

Fnet = 0
5398-8-Fg=0
Fg = 5390

Fg = mg
5390 = m*9.8
m = 550kg

Correct ?

 

[PhanthomJay]

looks good!

 

[TheRedDevil18]

So is everything correct and the mass is definitely 550kg ?

 

[PhanthomJay]

So is everything correct and the mass is definitely 550kg ?

Why sure, your work is good.