I just need someone to give me a link or an example of how to solve this. Every time I google this I only get problems looking to solve acceleration instead of the air resistance.
A parachutist of mass = 72.0 kg is falling straight down with an acceleration of
1.30 m/s2
. What is the magnitude of the resistance force of the air that opposes
the downward motion of the parachutist?
Any sort of help is appreciated
A parachutist of mass = 72.0 kg is falling straight down with an acceleration of
1.30 m/s2
. What is the magnitude of the resistance force of the air that opposes
the downward motion of the parachutist?
Any sort of help is appreciated
-
You got here 2 forces - gravity or F(g) pulling down and air resistance pushing up. you know that gravity is stronger because the object is accelerating downwards.
F(net)=F(g) - F(x) (F(x) being the air resistance)
the net force you already know:
F=ma=72*1.3=93.6
gravity would be:
F(g)=ma=mg=72*9.81=706.32
so:
F(net)=F(g) - F(x)
93.6=706-F(x)
F(x)=612.72
F(net)=F(g) - F(x) (F(x) being the air resistance)
the net force you already know:
F=ma=72*1.3=93.6
gravity would be:
F(g)=ma=mg=72*9.81=706.32
so:
F(net)=F(g) - F(x)
93.6=706-F(x)
F(x)=612.72