AP Physics B
posted by Clark .
An empty rubber balloon has a mass of
0.01 kg . The balloon is ﬁlled with helium
at a density of 0.181 kg/m3
. At this density
the balloon has a radius of 0.493 m .
If the ﬁlled balloon is fastened to a vertical
line, what is the tension in the line? The
acceleration of gravity is 9.8 m/s
Answer in units of N