Here's my futile attempt at the problem:
There's weight and pressure acting downward...mg and atmospheric pressure.
There's also the same pressure acting upward...so wouldn't the two pressures cancel out?
Basically, the only thing that is stopping the balloon from drifting off is the weight of...
Homework Statement
A helium-filled balloon at atmospheric pressure is tied to a 3.4 m long, 0.060 kg string. The balloon is spherical with a radius of 0.40 m. When released, it lifts a length (h) of the string and then remains in equilibrium as in Figure P9.78. Determine the value of h. When...