- #1
ClassicRock
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Homework Statement
A single constant force F = (2.84i + 4.60j) N acts on a 4.12 kg particle. Calculate the work done by this force if the particle moves from the origin to the point having the vector position r = (1.52i - 2.55j) m.
Homework Equations
W=FD
The Attempt at a Solution
W=(2.84*1.52)+(4.60*-2.55)
W=-7.41 J
This is the correct answer. I want to know why I can't use the pythagorean identity in order to find Force and Distance. Why can't I do that instead of the what I have shown here (could someone help me out with the name?).
Thanks,
ClassicRock