Calculating work for a weightlifter.

[tbarnet7]

Homework Statement

A weight lifter lifts a set of 390 N weights from ground level to a position over his head, a vertical distance of 1.75m. How much work does the weight lifter do, assuming he moves the weights at a constant speed?

I am not confident in my physics skills so I am really looking for someone to grade my work and give me feedback; thanks!

Homework Equations

W=F∆x

The Attempt at a Solution

W=(390N)(1.75m)=682.5 Joules

 

[Delphi51]

W=(390N)(1.75m) looks good!
I get a slightly different answer than your 682.5; better run it through the calculator again.

 

[iamalexalright]

I would like to point out that I get the same value as OP.

 

[Delphi51]

My mistake; thanks for catching it.