Recent content by petrichortea

I think that's where my confusion comes in - I can imaging Fahrenheit and Celsius, kilograms and pounds...but Newtons a foreign concept so it's hard to "see" it in my minds eye.

So, based on your (all) help. I think I've figured out that F is her weight - but in Newtons not kg. I came up with 662.78 N as an answer. That's 67.6 kg of frictional force acting on her 82.8 kg weight. That's a lot more friction than my gut feeling was expecting but that's what the numbers...

Gravity is pulling down. N is resisting, I think. Which is normal force, according to my class notes

First, I solved for the firefighters mass and got 82.9kg. Then, I plugged in the mass and the 1.8m/s2 acceleration into a=Fnet/m This is where I get confused. I think I'm supposed to use Fnet = F-fk to solve for fk (and that would be the answer?) but I don't know what to input for F.